Vulnerability Details CVE-2026-12329
Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 16.2%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-12329
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cpe:2.3:a:mozilla:firefox:140.0
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cpe:2.3:a:mozilla:firefox:140.1.0
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cpe:2.3:a:mozilla:firefox:140.10.0
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cpe:2.3:a:mozilla:firefox:140.10.1
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cpe:2.3:a:mozilla:firefox:140.10.2
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cpe:2.3:a:mozilla:firefox:140.11.0
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cpe:2.3:a:mozilla:firefox:140.2.0
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cpe:2.3:a:mozilla:firefox:140.3
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cpe:2.3:a:mozilla:firefox:140.3.0
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cpe:2.3:a:mozilla:firefox:140.3.1
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cpe:2.3:a:mozilla:firefox:140.4.0
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cpe:2.3:a:mozilla:firefox:140.5.0
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cpe:2.3:a:mozilla:firefox:140.6.0
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cpe:2.3:a:mozilla:firefox:140.7.0
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cpe:2.3:a:mozilla:firefox:140.7.1
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cpe:2.3:a:mozilla:firefox:140.8.0
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cpe:2.3:a:mozilla:firefox:140.9.0
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cpe:2.3:a:mozilla:firefox:140.9.1
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cpe:2.3:a:mozilla:thunderbird:140.0
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cpe:2.3:a:mozilla:thunderbird:140.0.1
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cpe:2.3:a:mozilla:thunderbird:140.1.0
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cpe:2.3:a:mozilla:thunderbird:140.1.1
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cpe:2.3:a:mozilla:thunderbird:140.2.0
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cpe:2.3:a:mozilla:thunderbird:140.2.1
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cpe:2.3:a:mozilla:thunderbird:140.3.0
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cpe:2.3:a:mozilla:thunderbird:140.3.1
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cpe:2.3:a:mozilla:thunderbird:140.4.0
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cpe:2.3:a:mozilla:thunderbird:140.5.0
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cpe:2.3:a:mozilla:thunderbird:140.6.0
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cpe:2.3:a:mozilla:thunderbird:140.7.0