CVE-2026-7322: Vulnerability in Mozilla Firefox
Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
AI Analysis
Technical Summary
This vulnerability involves multiple memory safety bugs in Mozilla Firefox and Thunderbird versions prior to 150.0.1 and ESR versions prior to 140.10.1 and 115.35.1. The bugs showed evidence of memory corruption, which could be exploited to run arbitrary code with no privileges required and no user interaction needed. The issues were identified and reported by multiple security researchers and the Mozilla Fuzzing Team. Mozilla has released official patches fixing these vulnerabilities in the specified versions.
Potential Impact
Successful exploitation of these memory safety bugs could lead to arbitrary code execution, potentially compromising confidentiality, integrity, and availability of affected systems. The CVSS vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. However, no exploits are currently known to be active in the wild.
Mitigation Recommendations
Mozilla has released official fixes for these vulnerabilities in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1. Users and administrators should upgrade to these versions or later to remediate the issue. Patch status is confirmed by the vendor advisories. No additional mitigation steps are required beyond applying the official updates.
CVE-2026-7322: Vulnerability in Mozilla Firefox
Description
Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVSS v3.1
Score 7.3high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves multiple memory safety bugs in Mozilla Firefox and Thunderbird versions prior to 150.0.1 and ESR versions prior to 140.10.1 and 115.35.1. The bugs showed evidence of memory corruption, which could be exploited to run arbitrary code with no privileges required and no user interaction needed. The issues were identified and reported by multiple security researchers and the Mozilla Fuzzing Team. Mozilla has released official patches fixing these vulnerabilities in the specified versions.
Potential Impact
Successful exploitation of these memory safety bugs could lead to arbitrary code execution, potentially compromising confidentiality, integrity, and availability of affected systems. The CVSS vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. However, no exploits are currently known to be active in the wild.
Mitigation Recommendations
Mozilla has released official fixes for these vulnerabilities in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1. Users and administrators should upgrade to these versions or later to remediate the issue. Patch status is confirmed by the vendor advisories. No additional mitigation steps are required beyond applying the official updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-28T13:42:17.804Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-35/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-36/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-37/","vendor":"Mozilla"}]
Threat ID: 69f0c288cbff5d86101cc9f3
Added to database: 4/28/2026, 2:22:00 PM
Last enriched: 5/13/2026, 3:37:03 AM
Last updated: 6/12/2026, 6:18:07 PM
Views: 271
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.