CVE-2012-2663

HighCVSS 7.5/10Last modified Jun 16, 2026

Description

extensions/libxt_tcp.c in iptables through 1.4.21 does not match TCP SYN+FIN packets in --syn rules, which might allow remote attackers to bypass intended firewall restrictions via crafted packets. NOTE: the CVE-2012-6638 fix makes this issue less relevant.

Metrics

CVSS 2.0 7.5/10AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected software

No affected versions have been published.

Timeline

Published
Feb 15, 2014
Last modified
Jun 16, 2026
NVD status
Modified

Related CVEs from 2012

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CVE-2012-2663: High severity, CVSS 7.5 | Vulnix