Read the docs
TI-2024-27567 Aliases CVE-2024-41281GHSA-3h7x-h2gx-59gv

Linksys WRT54G v4.21.5 has a stack overflow vulnerability in get_merge_mac function.

Priority HIGH 73CWE-121Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Linksys WRT54G v4.21.5 has a stack overflow vulnerability in get_merge_mac function.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00318 24th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linksys:wrt54g_firmware:4.21.5:*:*:*:*:*:*:*4.21.5VulnerableLinksys
cpe:2.3:h:linksys:wrt54g:-:*:*:*:*:*:*:*not specified by NVDRunning onLinksys
  • cpe:2.3:o:linksys:wrt54g_firmware:4.21.5:*:*:*:*:*:*:* Versions 4.21.5 Vulnerable ·Linksys
  • cpe:2.3:h:linksys:wrt54g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linksys

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-41281
  2. 2026-10-03 Alias added: GHSA-3h7x-h2gx-59gv

References

Other 1

  • TI-2024-07795 Linksys WRT54G POST Parameter apply.cgi validate_services_port stack-based overflow CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences