CVE-2013-7449

The ssl_do_connect function in common/server.c in HexChat before 2.10.2, XChat, and XChat-GNOME does not verify that the server hostname matches a domain name in the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Published: 2016-04-21 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-7449 is rated Low Risk (39.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.17%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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

Exploit prediction scoring system (EPSS) score for CVE-2013-7449

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 2026-05-13 0.15% 0.17% +0.02%
2 2025-12-28 0.17% 0.15% -0.02%
3 2025-12-27 — 0.17% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-7449

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 2.5 [email protected]
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-2013-7449

OS Trackers for CVE-2013-7449

vendor priority summary link
debian not yet assigned CVE-2013-7449 not yet assigned priority: Debian including 1 source packages (hexchat), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2013-7449
redhat medium — https://access.redhat.com/security/cve/CVE-2013-7449
suse medium CVE-2013-7449 severity moderate: SUSE including 2 source package names (hexchat, hexchat-lang), 10 product×package rows across 5 product lines (SUSE Linux Enterprise Desktop 12 SP1, SUSE Linux Enterprise Desktop 12 SP3, … (5 product lines)): Known Not Affected 10. https://www.suse.com/security/cve/CVE-2013-7449/
ubuntu medium CVE-2013-7449 medium priority: Ubuntu including 3 source packages (hexchat, xchat, xchat-gnome), 33 status rows across 11 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, wily, xenial, yakkety, zesty): not-affected 14, DNE 10, released 5, ignored 2, needs-triage 2. https://ubuntu.com/security/CVE-2013-7449

Affected software / configurations for CVE-2013-7449

Vendor Product Version Raw CPE
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 15.10 cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
xchat xchat — cpe:2.3:a:xchat:xchat:-:*:*:*:*:*:*:*
xchat xchat_gnome — cpe:2.3:a:xchat:xchat_gnome:-:*:*:*:*:*:*:*
hexchat_project hexchat <= 2.10.1 cpe:2.3:a:hexchat_project:hexchat:*:*:*:*:*:*:*:*

References for CVE-2013-7449

cvelogic Threat Intelligence