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CVE-2008-4128

HIGH 8.1 KNOWN EXPLOITED PoC CATALOGUED ALL-YEARS

Published 2008-09-18 · Last modified 2026-09-24 · mitre · NVD: Analyzed

Multiple cross-site request forgery (CSRF) vulnerabilities in the HTTP Administration component in Cisco IOS 12.4 on the 871 Integrated Services Router allow remote attackers to execute arbitrary commands via (1) a certain "show privilege" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI. NOTE: some of these details are obtained from third party information.

ACTIVELY EXPLOITED

Confirmed exploited in the wild — in CISA KEV since 2026-07-13. Patch or mitigate now.

Exploitation likelihood

33.9%chance of exploitation in 30 days · 98th percentile

● In CISA KEV (2026-07-13)● Catalogued PoC◆ SSVC: exploitation active, automatable no

Impact if exploited

8.1CVSS 3.1 · HIGH · ADP

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ⚠User interaction: A user must take an action (click / open a file)
  • ✓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-2008-4128 && searchsploit -m 6476Fetch the ExploitDB PoC locally; review the code before running it.
curl -s https://vulnpedia.com/cve/CVE-2008-4128/poc.jsonMachine-readable PoC index for this CVE (for automation).

Search for new PoCs

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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 Cisco

Products Ios 871 Integrated Services Router

Weakness (CWE)

  • CWE-352: Cross-Site Request Forgery (CSRF)

CVSS vector

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

References and research data (JSON)

Additional exploitation reports

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

  • VulnCheck KEV · 2026-07-13T00:00:00Z

    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-2008-4128 · Updated 2026-07-13T00:00:00Z
  • VulnCheck KEV · 2026-07-13T00:00:00ZVulnCheck KEV · CVE-2008-4128
    VulnCheck KEV · CVE-2008-4128
    VulnCheck KEV · CVE-2008-4128
  • VulnCheck KEV · 2026-07-14T00:00:00ZVulnCheck KEV · CVE-2008-4128
  • VulnCheck KEV · 2026-08-07T00:00:00ZVulnCheck KEV · CVE-2008-4128

Known Affected Software Configurations

VendorProductVersion range
CiscoIos12.4

All CVSS metrics

  • HIGH 8.1 v3.1 · ADP Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  • HIGH 8.1 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  • HIGH 9.3 v2.0 · NVD Primary
    AV:N/AC:M/Au:N/C:C/I:C/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