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CVE-2026-16412

CRITICAL
9.8
CVSS Severity Score
EPSS Score0.0000%
EPSS Percentile0.00th
Published2026-07-21
Last Modified2026-07-24
Data SourcesNVD

Vulnerability Description

Memory safety bugs present in Firefox ESR 140.12 and Firefox 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, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Affected Platforms (CPE)

📦
Mozilla

Firefox

< 153.0.0>= 140.1.0 and < 140.13.0

References & Advisories

🔗 https://bugzilla.mozilla.org/buglist.cgi?bug_id=2005113%2C2025369%2C2026301%2C2028663%2C2029761%2C2042242%2C2043271%2C2043300%2C2044612%2C2045378%2C2045406%2C2045407%2C2045616%2C2045626%2C2045730%2C2045732%2C2045769%2C2045771%2C2047957%2C2048934%2C2049818%2C2049822%2C2050151%2C2050368%2C2051653%2C2051658
🔗 https://bugzilla.mozilla.org/buglist.cgi?bug_id=2043035%2C2045057%2C2045187%2C2045402%2C2045417%2C2045482%2C2045611%2C2045618%2C2045756%2C2046917%2C2047718
🔗 https://bugzilla.mozilla.org/buglist.cgi?bug_id=2045413%2C2053635%2C2053637
🔗 https://www.mozilla.org/security/advisories/mfsa2026-68/
🔗 https://www.mozilla.org/security/advisories/mfsa2026-70/
🔗 https://www.mozilla.org/security/advisories/mfsa2026-71/
🔗 https://www.mozilla.org/security/advisories/mfsa2026-72/

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