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CVE-2011-4504

25
FAUCET Score

CVE-2011-4504 describes a critical vulnerability in the UPnP IGD implementation of Pseudo ICS UPnP software on ZyXEL P-330W routers, allowing remote attackers to establish arbitrary port mappings via SOAP requests to the WAN interface. This vulnerability carries a CVSS score of 7.5, indicating high severity due to its network-based attack vector, low attack complexity, and potential for full compromise of confidentiality, integrity, and availability. While there are no known public exploits or active exploitation, the vulnerability has garnered significant community discussion with 10 mentions, suggesting awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
0.1CPE matchmatch criteria
cpe:2.3:a:genmei_mori:pseudoics:0.1:*:*:*:*:*:*:*
0.2CPE matchmatch criteria
cpe:2.3:a:genmei_mori:pseudoics:0.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:genmei_mori:pseudoics:0.3:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:zyxel:p-330w_router:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 51st percentile among its peer group of 51,485 CVEs.

Social Chatter

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.

Media 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

Remediation records are not available for this CVE.

References

kb.cert.org / vuls/id/357851
US Government Resource
upnp-hacks.org / suspect.html