CVE-2025-14861: Vulnerability in Mozilla Firefox
Memory safety bugs present in Firefox 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146.0.1.
AI Analysis
Technical Summary
This vulnerability consists of multiple memory safety bugs in Firefox 146, some showing evidence of memory corruption. These bugs fall under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer). Mozilla addressed these issues in the Firefox 146.0.1 update, mitigating the risk of arbitrary code execution. The CVSS v3.1 base score is 8.8, indicating a high impact with network attack vector, low attack complexity, no privileges required, user interaction required, and high confidentiality, integrity, and availability impacts.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code on a victim's system, potentially leading to full compromise of the affected Firefox browser environment. The vulnerability affects confidentiality, integrity, and availability at a high level. No known active exploits have been reported.
Mitigation Recommendations
Users should update Firefox to version 146.0.1 or later to remediate this vulnerability. Mozilla has officially fixed the issue in this release. No additional mitigation steps are required beyond applying the official update.
CVE-2025-14861: Vulnerability in Mozilla Firefox
Description
Memory safety bugs present in Firefox 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146.0.1.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability consists of multiple memory safety bugs in Firefox 146, some showing evidence of memory corruption. These bugs fall under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer). Mozilla addressed these issues in the Firefox 146.0.1 update, mitigating the risk of arbitrary code execution. The CVSS v3.1 base score is 8.8, indicating a high impact with network attack vector, low attack complexity, no privileges required, user interaction required, and high confidentiality, integrity, and availability impacts.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code on a victim's system, potentially leading to full compromise of the affected Firefox browser environment. The vulnerability affects confidentiality, integrity, and availability at a high level. No known active exploits have been reported.
Mitigation Recommendations
Users should update Firefox to version 146.0.1 or later to remediate this vulnerability. Mozilla has officially fixed the issue in this release. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2025-12-18T00:22:11.950Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 69440f154eb3efac368cd706
Added to database: 12/18/2025, 2:26:29 PM
Last enriched: 4/14/2026, 11:41:00 AM
Last updated: 5/8/2026, 4:19:11 PM
Views: 431
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.