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CVE-2015-5477

HIGH 7.5 KNOWN EXPLOITED PoC CATALOGUED ALL-YEARS

Published 2015-07-29 · Last modified 2026-10-09 · mitre · NVD: Analyzed

named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) via TKEY queries.

ACTIVELY EXPLOITED

Confirmed exploited in the wild — in CISA KEV since 2026-10-08. Patch or mitigate now.

Exploitation likelihood

99.6%chance of exploitation in 30 days · 100th percentile

● In CISA KEV (2026-10-08)● Catalogued PoC◆ SSVC: exploitation active, automatable yes

Impact if exploited

7.5CVSS 3.1 · HIGH · ADP

  • ConfidentialityNone
  • IntegrityNone
  • AvailabilityHigh

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

Public PoC or exploit resources are catalogued below.

Listed by the named source; Vulnpedia has not tested these resources.

PoC data: JSON

Resource commands

searchsploit --cve CVE-2015-5477 && searchsploit -m 37721Fetch the ExploitDB PoC locally; review the code before running it.
searchsploit --cve CVE-2015-5477 && searchsploit -m 37723Fetch the ExploitDB PoC locally; review the code before running it.
curl -s https://vulnpedia.com/cve/CVE-2015-5477/poc.jsonMachine-readable PoC index for this CVE (for automation).

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Juniper Fedoraproject Redhat Debian Oracle Hp Canonical Netapp Apple Hpe Suse Opensuse Isc

Products Junos J2300 J2320 J2350 J4300 J4350 J4350 Nebs J6300 J635 Nebs J6350 Jx 4bri Jx 4ct1e1 Srx100 Srx1400 Srx1500 Srx1600 Srx2300 Srx300 Srx320 Srx340 Srx3400 Srx345 Srx3600 Srx380 Srx400 Srx4100 Srx4120 Srx4200 Srx4300 Srx440 Srx4600 Srx4700 Srx5400 Srx550 Hm Srx5600 Srx5800 Srx650 Fedora Enterprise Linux Enterprise Linux Aus

Weakness (CWE)

  • CWE-617: Reachable Assertion
  • CWE-19: Data Processing Errors

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References and research data (JSON)

Vendor product assessments

Showing 32 of 420 vendor product statements; 388 omitted. Read the full vendor advisory.

  • bind-30:9.3.6-25.P1.el5_11.3.i386 as a component of Red Hat Enterprise Linux Desktop (v. 5 client) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.3?arch=i386&epoch=30

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-30:9.3.6-25.P1.el5_11.3.i386 as a component of Red Hat Enterprise Linux Desktop Workstation (v. 5 client) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.3?arch=i386&epoch=30

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind97-devel-32:9.7.0-21.P2.el5_11.2.x86_64 as a component of Red Hat Enterprise Linux Desktop Workstation (v. 5 client) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.2?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-chroot-30:9.3.6-25.P1.el5_11.3.ia64 as a component of Red Hat Enterprise Linux (v. 5 server) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.3?arch=ia64&epoch=30

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-devel-30:9.3.6-25.P1.el5_11.3.ppc64 as a component of Red Hat Enterprise Linux (v. 5 server) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.3?arch=ppc64&epoch=30

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-libs-30:9.3.6-25.P1.el5_11.3.ppc64 as a component of Red Hat Enterprise Linux (v. 5 server) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.3?arch=ppc64&epoch=30

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind97-32:9.7.0-21.P2.el5_11.2.i386 as a component of Red Hat Enterprise Linux (v. 5 server) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.2?arch=i386&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind97-debuginfo-32:9.7.0-21.P2.el5_11.2.ppc64 as a component of Red Hat Enterprise Linux (v. 5 server) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.2?arch=ppc64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind97-libs-32:9.7.0-21.P2.el5_11.2.ppc as a component of Red Hat Enterprise Linux (v. 5 server) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.2?arch=ppc&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • caching-nameserver-30:9.3.6-25.P1.el5_11.3.x86_64 as a component of Red Hat Enterprise Linux (v. 5 server) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_11.3?arch=x86_64&epoch=30

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-devel-32:9.8.2-0.37.rc1.el6_7.2.i686 as a component of Red Hat Enterprise Linux Desktop Optional (v. 6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_7.2?arch=i686&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-libs-32:9.8.2-0.37.rc1.el6_7.2.x86_64 as a component of Red Hat Enterprise Linux HPC Node (v. 6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_7.2?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-devel-32:9.8.2-0.37.rc1.el6_7.2.x86_64 as a component of Red Hat Enterprise Linux HPC Node Optional (v. 6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_7.2?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.8.2-0.23.rc1.el6_5.2.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 6.5) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_5.2?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.8.2-0.30.rc1.el6_6.4.ppc as a component of Red Hat Enterprise Linux Server EUS (v. 6.6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6.4?arch=ppc&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-utils-32:9.8.2-0.30.rc1.el6_6.4.x86_64 as a component of Red Hat Enterprise Linux Server EUS (v. 6.6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6.4?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.8.2-0.37.rc1.el6_7.2.s390x as a component of Red Hat Enterprise Linux Server (v. 6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_7.2?arch=s390x&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.8.2-0.17.rc1.el6_4.7.x86_64 as a component of Red Hat Enterprise Linux Server Optional AUS (v. 6.4) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_4.7?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.8.2-0.30.rc1.el6_6.4.s390x as a component of Red Hat Enterprise Linux Server Optional EUS (v. 6.6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6.4?arch=s390x&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.8.2-0.37.rc1.el6_7.2.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_7.2?arch=ppc64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-32:9.8.2-0.37.rc1.el6_7.2.i686 as a component of Red Hat Enterprise Linux Workstation (v. 6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_7.2?arch=i686&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-devel-32:9.8.2-0.37.rc1.el6_7.2.x86_64 as a component of Red Hat Enterprise Linux Workstation Optional (v. 6) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_7.2?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.9.4-18.el7_1.3.i686 as a component of Red Hat Enterprise Linux Client Optional (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=i686&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-libs-lite-32:9.9.4-18.el7_1.3.i686 as a component of Red Hat Enterprise Linux ComputeNode (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=i686&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-32:9.9.4-18.el7_1.3.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=ppc64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-libs-32:9.9.4-18.el7_1.3.ppc as a component of Red Hat Enterprise Linux Server (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=ppc&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-utils-32:9.9.4-18.el7_1.3.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.9.4-18.el7_1.3.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-sdb-32:9.9.4-18.el7_1.3.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=s390x&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-debuginfo-32:9.9.4-18.el7_1.3.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind-sdb-chroot-32:9.9.4-18.el7_1.3.x86_64 as a component of Red Hat Enterprise Linux Workstation Optional (v. 7) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_1.3?arch=x86_64&epoch=32

    • vendor fix: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Vendor guidance
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00
  • bind.src as a component of Red Hat Enterprise Linux 4 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/bind?arch=src

    • no fix planned: Out of support scope
    Red Hat · CVE-2015-5477 · Updated 2026-10-09T02:00:21+00:00

Unverified PoC candidates

Catalogue matches for further research. These repositories have not been validated as working exploits.

7 candidates

Additional exploitation reports

Source-specific reports, separate from CISA KEV. Repeated observations from one source are not independent confirmations.

  • VulnCheck KEV · 2015-08-02T00:00:00Z

    Source guidance: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

    Source ransomware assessment: Unknown

    VulnCheck KEV · CVE-2015-5477 · Updated 2015-08-02T00:00:00Z
  • VulnCheck KEV · 2015-08-02T00:00:00ZVulnCheck KEV · CVE-2015-5477
  • VulnCheck KEV · 2026-10-08T00:00:00ZVulnCheck KEV · CVE-2015-5477
    VulnCheck KEV · CVE-2015-5477

All CVSS metrics

  • HIGH 7.5 v3.1 · ADP Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • HIGH 7.5 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • HIGH 7.8 v2.0 · NVD Primary
    AV:N/AC:L/Au:N/C:N/I:N/A:C

References

Exploit-tagged references (not proof of a PoC)

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS