CVE-2026-8092
Memory safety bugs in Thunderbird could allow arbitrary code execution.
Is CVE-2026-8092 being exploited?
Not confirmed. CVE-2026-8092 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-8092?
CVE-2026-8092 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-8092?
Yes. A fix has been recorded for CVE-2026-8092. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-8092 affect?
CVE-2026-8092 affects Thunderbird ESR 140.10.1, Thunderbird 150.0.1. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-8092?
Upgrade to Thunderbird 150.0.2 or ESR 140.10.2
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Memory corruption could allow arbitrary code execution via crafted input in Thunderbird ESR 140.10.1 and 150.0.1.
Patch when possible