CVE-2009-1571

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-02-22 · updated 2026-06-16
Weakness: CWE-94

Description

Use-after-free vulnerability in the HTML parser in Mozilla Firefox 3.0.x before 3.0.18 and 3.5.x before 3.5.8, Thunderbird before 3.0.2, and SeaMonkey before 2.0.3 allows remote attackers to execute arbitrary code via unspecified method calls that attempt to access freed objects in low-memory situations.

Affected products

Mozilla Firefox: 3.0, 3.0-alpha, 3.0-beta2, 3.0-beta5, 3.0.1, 3.0.2 (+22)
Mozilla Seamonkey: 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+33)

References

http://lists.fedoraproject.org/pipermail/package-announce/2010-February/035346.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-February/035367.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-February/035426.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/036097.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-March/036132.html
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00001.html
http://secunia.com/advisories/37242
http://secunia.com/advisories/38770
http://secunia.com/advisories/38772
http://secunia.com/advisories/38847
http://secunia.com/secunia_research/2009-45/
http://www.debian.org/security/2010/dsa-1999

Get alerted when CVE-2009-1571 or the next vulnerability affects your stack