Firefox ESR 140.1 Security Update: Fixes for CVE-2025-8027/8036 Memory Safety and CSP Bypass Vulnerabilities

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Security Advisory High Mozilla

Affected:

Firefox ESR 136.2
Firefox ESR 138.13
Firefox ESR 140.1
Firefox 141
Thunderbird ESR 138.13

Fixed in:

Firefox ESR 136.2
Firefox ESR 138.13
Firefox ESR 140.1
Firefox 141
Thunderbird ESR 138.13

Referenced CVEs: CVE-2025-8035 CVE-2025-8034 CVE-2025-8040 CVE-2025-8032 CVE-2025-8033 CVE-2025-8038 CVE-2025-8039 CVE-2025-8030 CVE-2025-8031 CVE-2025-8037

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Firefox ESR 140.1 Security Update: Fixes for CVE-2025-8027/8036 Memory Safety and CSP Bypass Vulnerabilities