CVE-2013-7449: The ssl_do_connect function in common/server.c in HexChat before 2.10.2, XChat, and XChat-GNOME does not verif

Q: How do I fix CVE-2013-7449?

ubuntu linux: mitigate or apply the listed mitigation; xchat: mitigate or apply the listed mitigation; xchat gnome: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2013-7449 being exploited?

CVE-2013-7449 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2013-7449 affect?

CVE-2013-7449 affects ubuntu linux, xchat, xchat gnome. Severity is medium (CVSS 6.5). 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 s

Q: How urgent is CVE-2013-7449?

Priority 47/100. Remotely exploitable, no login, no user action; On your watchlist

This month

MEDIUM 6.5REMOTEWATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2013-7449 is a medium-severity flaw (CVSS 6.5) affecting ubuntu linux, xchat, xchat gnome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-310
Published	2016-04-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: canonical · hexchat project · xchat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-04-21 14:59 UTCPublished CVE record published
2026-06-17 00:01 UTCUpdated Record last modified

canonical ubuntu linux MITIGATE

Affected: 12.04 · 14.04 · 15.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

xchat xchat MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xchat || rpm -q xchat || xchat --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

xchat xchat gnome MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xchat-gnome || rpm -q xchat-gnome || xchat-gnome --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

hexchat project hexchat UPGRADE

Affected: <= 2.10.1

Fixed in: newer than 2.10.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hexchat || rpm -q hexchat || hexchat --version

2. UPGRADE to newer than 2.10.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hexchat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hexchat

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-7449?

ubuntu linux: mitigate or apply the listed mitigation; xchat: mitigate or apply the listed mitigation; xchat gnome: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-7449 being exploited?

CVE-2013-7449 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-7449 affect?

CVE-2013-7449 affects ubuntu linux, xchat, xchat gnome. Severity is medium (CVSS 6.5). 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 s

How urgent is CVE-2013-7449?

Priority 47/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

Ubuntu vulnerabilities

Related CVEs

CVE-2026-47331 HIGH 7.8 MITIGATE Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list
CVE-2026-47333 HIGH 7.8 MITIGATE Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si
CVE-2026-47328 MEDIUM 6.1 MITIGATE Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer whic
CVE-2026-47332 MEDIUM 5.5 MITIGATE Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern
CVE-2026-47326 MEDIUM 5.5 MITIGATE Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a memory leak in the handling of big responses to Ap

References

← Back to latest CVEs