Mozilla Thunderbird Vulnerabilities

2 advisories affecting Mozilla Thunderbird

2

Total CVEs

2

Critical

0

High

CVE-2026-5734

Apr 7, 2026

Critical (9.8)

Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with en...

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CVE-2026-5735

Apr 7, 2026

Critical (9.8)

Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been expl...

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