Medium (6.5). EPSS 4.2% chance of exploitation in the next 30 days.
_TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards. This can, for example, lead to an application crash.
Severity
CVSS 3.1
6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
4.2% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)