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CVE-2011-1428

20
FAUCET Score

CVE-2011-1428 describes a vulnerability in WeeChat versions 0.3.4 and earlier, where the chat client fails to properly validate server hostnames against X.509 certificate subject domains. This flaw allows man-in-the-middle attackers to spoof SSL chat servers using arbitrary certificates, stemming from incorrect use of the GnuTLS API. The vulnerability has a CVSS score of 5.8, indicating a medium severity with network access, medium attack complexity, and potential for partial confidentiality and integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.3.4CPE matchmatch criteria
cpe:2.3:a:flashtux:weechat:*:*:*:*:*:*:*:*
0.0.1CPE matchmatch criteria
cpe:2.3:a:flashtux:weechat:0.0.1:*:*:*:*:*:*:*
0.0.2CPE matchmatch criteria
cpe:2.3:a:flashtux:weechat:0.0.2:*:*:*:*:*:*:*
0.0.3CPE matchmatch criteria
cpe:2.3:a:flashtux:weechat:0.0.3:*:*:*:*:*:*:*
0.0.4CPE matchmatch criteria
cpe:2.3:a:flashtux:weechat:0.0.4:*:*:*:*:*:*:*

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
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 23rd 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

archives.neohapsis.com / archives/fulldisclosure/2011-02/0671.html
Exploit
git.savannah.gnu.org / gitweb
savannah.nongnu.org / patch/index.php
ExploitPatch
secunia.com / advisories/43543
Vendor Advisory
securityfocus.com / bid/46612