VULNERABILITY INTELLIGENCE
CVE-2010-5074
CVSS score4.3 MEDIUM
EPSS probability0.64%
CISA KEVNot currently listed
Published2011-12-07
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:P/I:N/A:N
Description
The layout engine in Mozilla Firefox before 4.0, Thunderbird before 3.3, and SeaMonkey before 2.1 executes different code for visited and unvisited links during the processing of Cascading Style Sheets (CSS) token sequences, which makes it easier for remote attackers to obtain sensitive information about visited web pages via a timing attack.
Weakness classification
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')