CVE-2011-1428

Exp

Wee Enhanced Environment for Chat (aka WeeChat) 0.3.4 and earlier does not properly verify that the server hostname matches the domain name of the subject of an X.509 certificate, which allows man-in-the-middle attackers to spoof an SSL chat server via an arbitrary certificate, related to incorrect use of the GnuTLS API.

Published: 2011-03-16 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1428 is rated Exploit Available (51.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.17%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2011-1428

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-1428

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-05 0.13% 0.17% +0.04%
2 2025-05-07 0.16% 0.13% -0.04%
3 2025-03-30 — 0.16% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1428

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2011-1428

OS Trackers for CVE-2011-1428

vendor priority summary link
debian not yet assigned CVE-2011-1428 not yet assigned priority: Debian including 1 source packages (weechat), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-1428
ubuntu medium CVE-2011-1428 medium priority: Ubuntu including 1 source packages (weechat), 19 status rows across 19 suites (dapper, hardy, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 14, not-affected 3, DNE 1, needed 1. https://ubuntu.com/security/CVE-2011-1428

Affected software / configurations for CVE-2011-1428

Vendor Product Version Raw CPE
flashtux weechat <= 0.3.4 cpe:2.3:a:flashtux:weechat:*:*:*:*:*:*:*:*
flashtux weechat 0.0.1 cpe:2.3:a:flashtux:weechat:0.0.1:*:*:*:*:*:*:*
flashtux weechat 0.0.2 cpe:2.3:a:flashtux:weechat:0.0.2:*:*:*:*:*:*:*
flashtux weechat 0.0.3 cpe:2.3:a:flashtux:weechat:0.0.3:*:*:*:*:*:*:*
flashtux weechat 0.0.4 cpe:2.3:a:flashtux:weechat:0.0.4:*:*:*:*:*:*:*
flashtux weechat 0.0.5 cpe:2.3:a:flashtux:weechat:0.0.5:*:*:*:*:*:*:*
flashtux weechat 0.0.6 cpe:2.3:a:flashtux:weechat:0.0.6:*:*:*:*:*:*:*
flashtux weechat 0.0.7 cpe:2.3:a:flashtux:weechat:0.0.7:*:*:*:*:*:*:*
flashtux weechat 0.0.8 cpe:2.3:a:flashtux:weechat:0.0.8:*:*:*:*:*:*:*
flashtux weechat 0.0.9 cpe:2.3:a:flashtux:weechat:0.0.9:*:*:*:*:*:*:*
flashtux weechat 0.1.0 cpe:2.3:a:flashtux:weechat:0.1.0:*:*:*:*:*:*:*
flashtux weechat 0.1.1 cpe:2.3:a:flashtux:weechat:0.1.1:*:*:*:*:*:*:*
flashtux weechat 0.1.2 cpe:2.3:a:flashtux:weechat:0.1.2:*:*:*:*:*:*:*
flashtux weechat 0.1.3 cpe:2.3:a:flashtux:weechat:0.1.3:*:*:*:*:*:*:*
flashtux weechat 0.1.4 cpe:2.3:a:flashtux:weechat:0.1.4:*:*:*:*:*:*:*
flashtux weechat 0.1.5 cpe:2.3:a:flashtux:weechat:0.1.5:*:*:*:*:*:*:*
flashtux weechat 0.1.6 cpe:2.3:a:flashtux:weechat:0.1.6:*:*:*:*:*:*:*
flashtux weechat 0.1.7 cpe:2.3:a:flashtux:weechat:0.1.7:*:*:*:*:*:*:*
flashtux weechat 0.1.8 cpe:2.3:a:flashtux:weechat:0.1.8:*:*:*:*:*:*:*
flashtux weechat 0.1.9 cpe:2.3:a:flashtux:weechat:0.1.9:*:*:*:*:*:*:*
flashtux weechat 0.2.0 cpe:2.3:a:flashtux:weechat:0.2.0:*:*:*:*:*:*:*
flashtux weechat 0.2.1 cpe:2.3:a:flashtux:weechat:0.2.1:*:*:*:*:*:*:*
flashtux weechat 0.2.2 cpe:2.3:a:flashtux:weechat:0.2.2:*:*:*:*:*:*:*
flashtux weechat 0.2.3 cpe:2.3:a:flashtux:weechat:0.2.3:*:*:*:*:*:*:*
flashtux weechat 0.2.4 cpe:2.3:a:flashtux:weechat:0.2.4:*:*:*:*:*:*:*
flashtux weechat 0.2.5 cpe:2.3:a:flashtux:weechat:0.2.5:*:*:*:*:*:*:*
flashtux weechat 0.2.6 cpe:2.3:a:flashtux:weechat:0.2.6:*:*:*:*:*:*:*
flashtux weechat 0.2.6.1 cpe:2.3:a:flashtux:weechat:0.2.6.1:*:*:*:*:*:*:*
flashtux weechat 0.2.6.2 cpe:2.3:a:flashtux:weechat:0.2.6.2:*:*:*:*:*:*:*
flashtux weechat 0.2.6.3 cpe:2.3:a:flashtux:weechat:0.2.6.3:*:*:*:*:*:*:*
flashtux weechat 0.3.0 cpe:2.3:a:flashtux:weechat:0.3.0:*:*:*:*:*:*:*
flashtux weechat 0.3.1 cpe:2.3:a:flashtux:weechat:0.3.1:*:*:*:*:*:*:*
flashtux weechat 0.3.1.1 cpe:2.3:a:flashtux:weechat:0.3.1.1:*:*:*:*:*:*:*
flashtux weechat 0.3.2 cpe:2.3:a:flashtux:weechat:0.3.2:*:*:*:*:*:*:*
flashtux weechat 0.3.3 cpe:2.3:a:flashtux:weechat:0.3.3:*:*:*:*:*:*:*

References for CVE-2011-1428

cvelogic Threat Intelligence