Vulnerability Database

300,445

Total vulnerabilities in the database

CVE-2009-0777

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.

  • Published: Mar 5, 2009
  • Updated: Nov 9, 2025
  • CVE: CVE-2009-0777
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 5.8
  • AV:N/AC:M/Au:N/C:N/I:P/A:P

CWEs:

Software From Fixed in
mozilla / seamonkey 1.1.10 1.1.10.x
mozilla / seamonkey 1.0.3 1.0.3.x
mozilla / firefox 2.0.0.12 2.0.0.12.x
mozilla / thunderbird 2.0.0.4 2.0.0.4.x
mozilla / seamonkey 1.1.8 1.1.8.x
mozilla / seamonkey 1.0.1 1.0.1.x
mozilla / seamonkey 1.1.7 1.1.7.x
mozilla / thunderbird 2.0.0.6 2.0.0.6.x
mozilla / seamonkey 1.0.6 1.0.6.x
mozilla / firefox 1.5.0.6 1.5.0.6.x
mozilla / seamonkey 1.0.9 1.0.9.x
mozilla / seamonkey - 1.1.14.x
mozilla / seamonkey 1.1.3 1.1.3.x
mozilla / firefox 2.0.0.2 2.0.0.2.x
mozilla / firefox 1.5.0.10 1.5.0.10.x
mozilla / firefox 1.5.0.3 1.5.0.3.x
mozilla / seamonkey 1.0 1.0.x
mozilla / firefox 1.5.0.11 1.5.0.11.x
mozilla / thunderbird 2.0.0.18 2.0.0.18.x
mozilla / thunderbird 2.0.0.9 2.0.0.9.x
mozilla / seamonkey 1.1.5 1.1.5.x
mozilla / seamonkey 1.0.7 1.0.7.x
mozilla / firefox 1.0.2 1.0.2.x
mozilla / firefox 3.0.4 3.0.4.x
mozilla / seamonkey 1.1-alpha 1.1-alpha.x
mozilla / thunderbird 2.0.0.16 2.0.0.16.x
mozilla / firefox 3.0.5 3.0.5.x
mozilla / firefox 1.5 1.5.x
mozilla / firefox 1.0.4 1.0.4.x
mozilla / firefox 2.0.0.7 2.0.0.7.x
mozilla / firefox 1.0.7 1.0.7.x
mozilla / seamonkey 1.1.12 1.1.12.x
mozilla / seamonkey 1.1 1.1.x
mozilla / firefox 2.0.0.9 2.0.0.9.x
mozilla / firefox 2.0.0.16 2.0.0.16.x
mozilla / thunderbird - 2.0.0.20.x
mozilla / firefox 2.0.0.17 2.0.0.17.x
mozilla / seamonkey 1.1.2 1.1.2.x
mozilla / firefox 2.0.0.15 2.0.0.15.x
mozilla / seamonkey 1.0.2 1.0.2.x
mozilla / seamonkey 1.0.8 1.0.8.x
mozilla / thunderbird 2.0.0.0 2.0.0.0.x
mozilla / seamonkey 1.1.11 1.1.11.x
mozilla / firefox 1.0 1.0.x
mozilla / firefox 3.0.3 3.0.3.x
mozilla / seamonkey 1.1-beta 1.1-beta.x
mozilla / seamonkey 1.1.1 1.1.1.x
mozilla / firefox 1.5.0.7 1.5.0.7.x
mozilla / thunderbird 2.0.0.12 2.0.0.12.x
mozilla / firefox 2.0 2.0.x
mozilla / firefox 1.0.1 1.0.1.x
mozilla / firefox 2.0.0.14 2.0.0.14.x
mozilla / seamonkey 1.0.5 1.0.5.x
mozilla / thunderbird 2.0.0.14 2.0.0.14.x
mozilla / firefox 1.5.0.8 1.5.0.8.x
mozilla / firefox 2.0.0.3 2.0.0.3.x
mozilla / firefox 1.5.0.9 1.5.0.9.x
mozilla / thunderbird 2.0.0.17 2.0.0.17.x
mozilla / firefox 1.5.0.5 1.5.0.5.x
mozilla / firefox 1.5.0.12 1.5.0.12.x
mozilla / firefox 2.0.0.6 2.0.0.6.x
mozilla / seamonkey 1.1.6 1.1.6.x
mozilla / firefox 3.0 3.0.x
mozilla / firefox 2.0.0.11 2.0.0.11.x
mozilla / firefox 1.5.0.2 1.5.0.2.x
mozilla / firefox 1.0.3 1.0.3.x
mozilla / firefox 3.0.1 3.0.1.x
mozilla / firefox 2.0.0.4 2.0.0.4.x
mozilla / firefox 2.0.0.13 2.0.0.13.x
mozilla / firefox 2.0.0.18 2.0.0.18.x
mozilla / firefox - 3.0.6.x
mozilla / firefox 2.0.0.1 2.0.0.1.x
mozilla / firefox 3.0.2 3.0.2.x
mozilla / thunderbird 2.0.0.5 2.0.0.5.x
mozilla / seamonkey 1.1.9 1.1.9.x
mozilla / seamonkey 1.1.13 1.1.13.x
mozilla / firefox 2.0.0.20 2.0.0.20.x
mozilla / firefox 2.0.0.8 2.0.0.8.x
mozilla / firefox 2.0.0.19 2.0.0.19.x
mozilla / firefox 1.5.0.4 1.5.0.4.x
mozilla / firefox 1.5.0.1 1.5.0.1.x
mozilla / firefox 1.0.5 1.0.5.x
mozilla / firefox 2.0.0.5 2.0.0.5.x
mozilla / firefox 2.0.0.10 2.0.0.10.x
mozilla / thunderbird 2.0.0.19 2.0.0.19.x
mozilla / firefox 1.0.6 1.0.6.x
mozilla / seamonkey 1.1.4 1.1.4.x
mozilla / firefox 1.0.8 1.0.8.x