CVE-2009-1313: Mozilla Firefox

High severity, CVSS 9.3. EPSS: 8.4% chance of exploitation in the next 30 days.

The nsTextFrame::ClearTextRun function in layout/generic/nsTextFrameThebes.cpp in Mozilla Firefox 3.0.9 allows remote attackers to cause a denial of service (memory corruption) and probably execute arbitrary code via unspecified vectors. NOTE: this vulnerability reportedly exists because of an incorrect fix for CVE-2009-1302.

Affected products

• Mozilla Firefox: version 3.0.9 only

Published 2009-04-30. Last modified 2026-06-16.