CVE-2011-4499 describes a critical vulnerability in the UPnP IGD implementation of Broadcom UPnP stack on specific Cisco Linksys WRT54G and WRT54GS router firmware versions. This flaw allows remote attackers to establish arbitrary port mappings by sending a crafted UPnP AddPortMapping action via a SOAP request to the WAN interface. Rated with a CVSS score of 7.5, this vulnerability is easily exploitable over the network with low attack complexity and no authentication required, potentially leading to unauthorized access and data exposure. The potential impact includes confidentiality, integrity, and availability compromise (C:P/I:P/A:P). Despite its severity, there is no evidence of active exploitation, nor is public exploit code available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, indicating a low level of public awareness or interest.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 4.20.8CPE matchmatch criteria | cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:*:*:*:*:*:*:*:* | ||
3.03.9CPE matchmatch criteria | cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:3.03.9:*:*:*:*:*:*:* | ||
4.20.7CPE matchmatch criteria | cpe:2.3:a:cisco:linksys_wrt54g_router_firmware:4.20.7:*:*:*:*:*:*:* | ||
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:h:linksys:wrt54g:*:*:*:*:*:*:*:* | ||
2.2CPE matchmatch criteria | cpe:2.3:h:linksys:wrt54g:2.2:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.