Memory safety bugs present in Firefox 152. (CVE-2026-16411)
Memory safety bugs present in Thunderbird 152. 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 153 and Thunderbird 153.
AI Analysis
Technical Summary
CVE-2026-16411 encompasses several memory safety bugs in Mozilla Firefox before version 153. Some of these bugs showed evidence of memory corruption, which could be exploited to execute arbitrary code. The vulnerabilities were resolved in Firefox 153. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. The vendor advisory confirms the fix in Firefox 153 and lists multiple related vulnerabilities addressed in that release.
Potential Impact
Successful exploitation of these memory safety bugs could lead to arbitrary code execution, compromising the confidentiality, integrity, and availability of the affected system. Given the critical CVSS score of 9.8, the impact is severe, potentially allowing remote attackers to execute code without user interaction or privileges.
Mitigation Recommendations
A fix is available and has been officially released by Mozilla in Firefox version 153. Users and administrators should update to Firefox 153 or later to remediate these vulnerabilities. No additional mitigation steps are indicated by the vendor advisory.
Memory safety bugs present in Firefox 152. (CVE-2026-16411)
Description
Memory safety bugs present in Thunderbird 152. 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 153 and Thunderbird 153.
CVSS v3.1
Score 9.8critical
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16411 encompasses several memory safety bugs in Mozilla Firefox before version 153. Some of these bugs showed evidence of memory corruption, which could be exploited to execute arbitrary code. The vulnerabilities were resolved in Firefox 153. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. The vendor advisory confirms the fix in Firefox 153 and lists multiple related vulnerabilities addressed in that release.
Potential Impact
Successful exploitation of these memory safety bugs could lead to arbitrary code execution, compromising the confidentiality, integrity, and availability of the affected system. Given the critical CVSS score of 9.8, the impact is severe, potentially allowing remote attackers to execute code without user interaction or privileges.
Mitigation Recommendations
A fix is available and has been officially released by Mozilla in Firefox version 153. Users and administrators should update to Firefox 153 or later to remediate these vulnerabilities. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-jxhp-8w98-jhcf
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-16411"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- 3.1
Threat ID: 6a5fd1521010f89cc21c92e3
Added to database: 07/21/2026, 20:06:42 UTC
Last enriched: 07/22/2026, 01:48:02 UTC
Last updated: 09/03/2026, 10:52:07 UTC
Views: 58
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.