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CVE-2026-95818

LOW 3.6

Published 2026-09-22 · Last modified 2026-09-22

A stack-based buffer overflow in the dynamic loader (ld.so) of the GNU C Library (glibc) versions 2.14 through 2.44 allows a local attacker to crash or corrupt the memory of setuid/setgid (AT_SECURE) programs. When such a program's DT_RPATH or DT_RUNPATH begins with $ORIGIN and is followed by NUL or '/' the loader both reads past the end of the path buffer and writes past the end of a stack-allocated internal buffer. The corrupted loader stack can lead to a loader crash (denial of service) and limited disclosure of process memory.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.1%chance of exploitation in 30 days · 3rd percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

3.6CVSS 3.1 · LOW

  • ConfidentialityLow
  • IntegrityLow
  • AvailabilityNone

What an attacker needs

  • ⚠Access: Requires local access to the host
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, 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 The Gnu C Library

Products Glibc

Weakness (CWE)

  • CWE-121: Stack-based buffer overflow

CVSS vector

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

References and research data (JSON)

Vendor product assessments

Showing 32 of 1132 vendor product statements; 1100 omitted. Read the full vendor advisory.

  • compat-libpthread-nonshared-0:2.43-8.7.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-ber-0:2.43-8.7.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-doi-0:2.43-8.7.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-gl-0:2.43-8.7.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-kab-0:2.43-8.7.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-mai-0:2.43-8.7.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-nl-0:2.43-8.7.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-sc-0:2.43-8.7.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-ta-0:2.43-8.7.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-vi-0:2.43-8.7.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • sysroot-x86_64-fc43-glibc-0:2.43-8.7.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=noarch&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-gl as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-gl

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-niu as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-niu

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-ve as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-ve

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-ce as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-ce

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-lg as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-lg

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-st as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-st

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-ayc as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-ayc

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-it as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-it

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-langpack-sah as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/glibc-langpack-sah

    • none available: Affected
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · known affected

    Vendor assessment for this product only.

    pkg:oci/ose-rhel-coreos-9?repository_url=registry.redhat.io/openshift/ose-rhel-coreos-9

    • none available: Fix deferred
    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • compat-glibc-headers as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/compat-glibc-headers

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • compat-glibc.src as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/compat-glibc?arch=src

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-common as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/glibc-common

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-devel as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/glibc-devel

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-headers as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/glibc-headers

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc-utils as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/glibc-utils

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • glibc.src as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/glibc?arch=src

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • nscd as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/nscd

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • compat-glibc-headers as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/compat-glibc-headers

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00
  • compat-glibc.src as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/compat-glibc?arch=src

    Red Hat · CVE-2026-95818 · Updated 2026-09-29T00:17:03+00:00

All CVSS metrics

  • LOW 3.6 v3.1 · CNA Primary
    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
  • LOW 3.6 v3.1 · NVD Secondary
    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS