Vulnerability intelligence
CVE-2026-7323
Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVSS Score
7.3
High
EPSS — Exploit Probability
0.4%
Riskier than 30% of all CVEs
Exploitation
Not in CISA KEV
No federal exploitation record
Remediation
unknown
Check vendor advisories
1 article across 1 outlet · first covered Apr 29, 2026 · latest Apr 29, 2026
Coverage timeline
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Chrome 147 and Firefox 150 patch critical memory safety flawswww.securityweek.com · Apr 29, 2026