Is CVE-2010-3765 actively exploited?

Yes. CVE-2010-3765 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2010-3765 be exploited remotely?

The attack vector of CVE-2010-3765 has not been classified yet.

What is the CVSS score of CVE-2010-3765?

CVE-2010-3765 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2010-3765

HIGHCISA KEVIN THE WILD

CVE-2010-3765

Published: October 6, 2025

EPSS:87.45%probability of exploitation in 30 daysPercentile:99.4th

Official 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.

NVD Source

CISA KEV Advisory

Mozilla Multiple Products Remote Code Execution Vulnerability

Added to KEV: 2025-10-06Federal patch deadline: 2025-10-27

Required Action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Risk Analysis

This vulnerability in Mozilla Firefox, SeaMonkey, and Thunderbird, when JavaScript is enabled, can lead to memory corruption and allow remote attackers to execute arbitrary code. The extremely high EPSS score of 0.87446 signifies a very high probability of exploitation, and its presence in CISA's KEV confirms active exploitation, demanding immediate attention.

This vulnerability is actively being exploited in the wild. The nature of the flaw, involving JavaScript, suggests it is remotely exploitable.

Recommended Action

Users should update Mozilla Firefox, SeaMonkey, and Thunderbird to the latest secure versions. Disabling JavaScript in untrusted environments can also reduce exposure.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2010-3765 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2010-3765 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.