VULNERABILITY INTELLIGENCE

CVE-2009-0777

CVSS score5.8 MEDIUM
EPSS probability1.50%
CISA KEVNot currently listed
Published2009-03-05
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:P/A:P

Description

Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 decode invisible characters when they are displayed in the location bar, which causes an incorrect address to be displayed and makes it easier for remote attackers to spoof URLs and conduct phishing attacks.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references