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TI-2011-03871 Aliases CVE-2011-4499GHSA-f493-r5jh-m3rp

The UPnP IGD implementation in the Broadcom UPnP stack on the Cisco Linksys WRT54G with…

Priority LOW 35CWE-16Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

The UPnP IGD implementation in the Broadcom UPnP stack on the Cisco Linksys WRT54G with firmware before 4.30.5, WRT54GS v1 through v3 with firmware before 4.71.1, and WRT54GS v4 with firmware before 1.06.1 allows remote attackers to establish arbitrary port mappings by sending a UPnP AddPortMapping action in a SOAP request to the WAN interface, related to an "external forwarding" vulnerability.

Why it matters now

EPSS 0.01309 70th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

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

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:*:*:*:*:*:*:*:*up to 4.20.8VulnerableCisco
cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:3.03.9:*:*:*:*:*:*:*3.03.9VulnerableCisco
cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:4.20.7:*:*:*:*:*:*:*4.20.7VulnerableCisco
cpe:2.3:h:linksys:wrt54g:*:*:*:*:*:*:*:*all versionsVulnerableLinksys
cpe:2.3:h:linksys:wrt54g:2.2:*:*:*:*:*:*:*2.2VulnerableLinksys
cpe:2.3:a:cisco:linksys_wrt54gs_router_firmware:*:*:*:*:*:*:*:*up to 4.70.6VulnerableCisco
cpe:2.3:a:cisco:linksys_wrt54gs_router_firmware:2.09.1:*:*:*:*:*:*:*2.09.1VulnerableCisco
cpe:2.3:h:linksys:wrt54gs:1.0:*:*:*:*:*:*:*1.0VulnerableLinksys
cpe:2.3:h:linksys:wrt54gs:2.0:*:*:*:*:*:*:*2.0VulnerableLinksys
cpe:2.3:h:linksys:wrt54gs:3.0:*:*:*:*:*:*:*3.0VulnerableLinksys
  • cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:*:*:*:*:*:*:*:* Versions up to 4.20.8 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:3.03.9:*:*:*:*:*:*:* Versions 3.03.9 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:4.20.7:*:*:*:*:*:*:* Versions 4.20.7 Vulnerable ·Cisco
  • cpe:2.3:h:linksys:wrt54g:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Linksys
  • cpe:2.3:h:linksys:wrt54g:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·Linksys
  • cpe:2.3:a:cisco:linksys_wrt54gs_router_firmware:*:*:*:*:*:*:*:* Versions up to 4.70.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:linksys_wrt54gs_router_firmware:2.09.1:*:*:*:*:*:*:* Versions 2.09.1 Vulnerable ·Cisco
  • cpe:2.3:h:linksys:wrt54gs:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Linksys
  • cpe:2.3:h:linksys:wrt54gs:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Linksys
  • cpe:2.3:h:linksys:wrt54gs:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Linksys
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:linksys_wrt54gs_router_firmware:*:*:*:*:*:*:*:*up to 1.06VulnerableCisco
cpe:2.3:h:linksys:wrt54gs:4.0:*:*:*:*:*:*:*4.0VulnerableLinksys
  • cpe:2.3:a:cisco:linksys_wrt54gs_router_firmware:*:*:*:*:*:*:*:* Versions up to 1.06 Vulnerable ·Cisco
  • cpe:2.3:h:linksys:wrt54gs:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Linksys

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-4499
  2. 2026-10-03 Alias added: GHSA-f493-r5jh-m3rp

References

Advisory 1

Other 1

Sources

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