CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.

Remediation Deadline: Oct 27, 2025

CVE-2010-3765

High

EPSS 86.0%CISA KEV

Mozilla/Multiple Products

Description

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.

EPSS — Exploit Probability

86.0%

Higher than 99.4% of all CVEs

Required Action

https://www.mozilla.org/en-US/security/advisories/mfsa2010-73 ; https://nvd.nist.gov/vuln/detail/CVE-2010-3765

Risk Assessment

HIGH

In CISA KEV

High EPSS

Details

Severity: High
EPSS: 86.0%
CISA KEV: Yes
Ransomware: Unknown
Articles: 0

Timeline

Published

Oct 6, 2025

Added to KEV

Oct 6, 2025

Remediation Due

Oct 27, 2025

Affected Product

Mozilla

Multiple Products

View all Mozilla CVEs

External Links

NVD (NIST)CVE Details MITRE CVE