Mozilla Multiple Products Remote Code Execution
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2025-10-27 · passed 10 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Mozilla Firefox, SeaMonkey, and Thunderbird contain an unspecified vulnerability when JavaScript is enabled. This allows remote attackers to execute arbitrary code via vectors related to nsCSSFrameConstructor::ContentAppended, the appendChild method, incorrect index tracking, and the creation of multiple frames, which triggers memory corruption.
Who is affected
Mozilla Multiple Products. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 10 months ago
Sources
- NVD entry for CVE-2010-3765 nvd.nist.gov/vuln/detail/CVE-2010-3765
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- mozilla.org www.mozilla.org/en-US/security/advisories/mfsa2010-73
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2010-3765