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CVE-2011-5053

30
FAUCET Score

CVE-2011-5053 describes a vulnerability in the Wi-Fi Protected Setup (WPS) protocol, specifically when using the "external registrar" authentication method, affecting Wi-Fi devices implementing this protocol. The flaw allows remote attackers to more easily discover the WPS PIN by analyzing EAP-NACK messages, which improperly disclose information about failed PIN authentication attempts. This medium-severity vulnerability (CVSS 5.8) has a network attack vector, medium attack complexity, and can lead to unauthorized disclosure of the Wi-Fi network password or access point reconfiguration. While not listed in CISA's KEV catalog and with no social media or media coverage, exploit code, specifically "Reaver," is publicly available on ExploitDB, indicating potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:wi-fi:wifi_protected_setup_protocol:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.34%
Probability of exploitation in next 30 days
EPSS Percentile
87.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-18291 · Dec 30, 2011
This CVE's current EPSS score of 0.0334 is in the 82nd percentile among its peer group of 19,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

code.google.com / p/reaver-wps
sviehb.files.wordpress.com / 2011/12/viehboeck_wps.pdf
sviehb.wordpress.com / 2011/12/27/wi-fi-protected-setup-pin-brute-force-vulnerability
tools.cisco.com / security/center/content/CiscoSecurityResponse/cisco-sr-20120111-wps
kb.cert.org / vuls/id/723755
US Government Resource
us-cert.gov / cas/techalerts/TA12-006A.html
US Government Resource