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…

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.

Scores

EPSS (exploitation in 30 days)

1.5% · top 26% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (19)

• RHSA-2009:0315 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://www.mozilla.org/security/announce/2009/mfsa2009-11.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SA:2009:012 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• oval:org.mitre.oval:def:11222 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• oval:org.mitre.oval:def:6157 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• ADV-2009-0632 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• oval:org.mitre.oval:def:6039 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• oval:org.mitre.oval:def:6229 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 34140 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 34272 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 1021799 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 34145 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2009-069.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• mozilla-invisible-url-spoofing(49087) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• MDVSA-2009:075 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• 33990 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• https://bugzilla.mozilla.org/show_bug.cgi?id=452979 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://support.avaya.com/japple/css/japple?temp.documentID=366362&temp.productID=154235&temp.releaseID=361845&temp.bucketID=126655&PAGE=Document (opens in a new tab)x_refsource_CONFIRMx_transferred
• oval:org.mitre.oval:def:7435 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-0777](https://trackcve.app/badge/CVE-2009-0777.svg)](https://trackcve.app/cve/CVE-2009-0777)

Record last updated 7 Aug 2024, 04:48 UTC.