CVE-2026-5735: Vulnerability in Mozilla Firefox
CVE-2026-5735 is a memory safety vulnerability affecting Mozilla Firefox 149. 0. 1 and Thunderbird 149. 0. 1. The issue involves memory corruption bugs that could potentially be exploited to execute arbitrary code. Mozilla has fixed these memory safety bugs in Firefox 149. 0. 2 and Thunderbird 149. 0.
AI Analysis
Technical Summary
This vulnerability involves memory safety bugs in Firefox 149.0.1 and Thunderbird 149.0.1, which showed evidence of memory corruption. Mozilla presumes that with sufficient effort, these bugs could be exploited to run arbitrary code. The issue affects Firefox versions prior to 149.0.2. Mozilla released Firefox 149.0.2 and Thunderbird 149.0.2 to address these vulnerabilities, providing an official fix.
Potential Impact
The vulnerability could allow an attacker to exploit memory corruption bugs to execute arbitrary code within the context of the affected applications. This could lead to compromise of the user's system or data if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Mozilla has released Firefox 149.0.2 and Thunderbird 149.0.2 which include fixes for these memory safety bugs. Users and administrators should update to these versions or later to remediate the vulnerability. Patch status is confirmed by the vendor advisory.
CVE-2026-5735: Vulnerability in Mozilla Firefox
Description
CVE-2026-5735 is a memory safety vulnerability affecting Mozilla Firefox 149. 0. 1 and Thunderbird 149. 0. 1. The issue involves memory corruption bugs that could potentially be exploited to execute arbitrary code. Mozilla has fixed these memory safety bugs in Firefox 149. 0. 2 and Thunderbird 149. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves memory safety bugs in Firefox 149.0.1 and Thunderbird 149.0.1, which showed evidence of memory corruption. Mozilla presumes that with sufficient effort, these bugs could be exploited to run arbitrary code. The issue affects Firefox versions prior to 149.0.2. Mozilla released Firefox 149.0.2 and Thunderbird 149.0.2 to address these vulnerabilities, providing an official fix.
Potential Impact
The vulnerability could allow an attacker to exploit memory corruption bugs to execute arbitrary code within the context of the affected applications. This could lead to compromise of the user's system or data if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Mozilla has released Firefox 149.0.2 and Thunderbird 149.0.2 which include fixes for these memory safety bugs. Users and administrators should update to these versions or later to remediate the vulnerability. Patch status is confirmed by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-07T12:43:15.436Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-25/","vendor":"Mozilla"}]
Threat ID: 69d50016aaed68159a219ce7
Added to database: 4/7/2026, 1:01:10 PM
Last enriched: 4/7/2026, 1:16:27 PM
Last updated: 4/7/2026, 2:21:26 PM
Views: 4
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.