Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-8975

Memory safety bugs present in Thunderbird 140.10 and Thunderbird 150. 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 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 41.0%
CVSS Severity
CVSS v3 Score 8.8
References
Products affected by CVE-2026-8975


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