Double free vulnerability in nsVCard.cpp in Mozilla Thunderbird before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to cause…

Description

Double free vulnerability in nsVCard.cpp in Mozilla Thunderbird before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to cause a denial of service (hang) and possibly execute arbitrary code via a VCard that contains invalid base64 characters.

Scores

EPSS (exploitation in 30 days)

3.3% · top 11% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.

Weakness

• n/a
• CWE-119 (opens in a new tab)All about CWE-119 and its CVEs

Affected products

• n/a

  • affected n/a

References (34)

• 20709 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• USN-297-3 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-323-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• mozilla-vcard-doublefree-memory-corruption(26850) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• 21210 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2006:0594 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 21336 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20382 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 1016214 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 20060602 rPSA-2006-0091-1 firefox thunderbird (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• ADV-2006-3749 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• MDKSA-2006:146 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• RHSA-2006:0609 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 21178 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 21607 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 18228 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 21134 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 21631 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SSRT061236 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• oval:org.mitre.oval:def:10247 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• GLSA-200606-21 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• DSA-1118 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• RHSA-2006:0611 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• DSA-1134 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 21324 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 21183 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20394 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 21269 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SUSE-SA:2006:035 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• USN-297-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• RHSA-2006:0578 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• ADV-2006-2106 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22065 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.mozilla.org/security/announce/2006/mfsa2006-40.html (opens in a new tab)x_refsource_CONFIRMx_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-2006-2781](https://trackcve.app/badge/CVE-2006-2781.svg)](https://trackcve.app/cve/CVE-2006-2781)

Record last updated 7 Aug 2024, 18:06 UTC.