UNKNOWN NVD
CVE-2026-110247
Several buffer-growth sites in libmime performed size arithmetic in 32-bit types without overflow checks. On a sufficiently large message the growth guard could
Several buffer-growth sites in libmime performed size arithmetic in 32-bit types without overflow checks. On a sufficiently large message the growth guard could fail open, or the buffer could be reallocated smaller than required, and a subsequent memcpy would then write attacker-controlled data across adjacent heap allocations. This vulnerability was fixed in Thunderbird 158.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2071621
- https://www.mozilla.org/security/advisories/mfsa2026-109/
This unknown severity vulnerability was published on 2026-10-13 via NVD.
vulnfeed aggregates 14602 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.