{"id":"CVE-2026-116738","aliases":[],"title":"VMime through 0.9.2 Stack-Based Buffer Overflow via uuencode Decoder","description":"VMime through 0.9.2 contains an integer underflow in the uuEncoder::decode function that allows remote attackers to trigger a stack-based buffer overflow via crafted uuencoded MIME parts. Attackers can send an email with a uuencoded line whose length character is 'b' but is not a 'begin' line, corrupting stack memory to crash the application or potentially execute code.","severity":"high","score":8.7,"published":"2026-10-26T21:52:37.804Z","modified":"2026-10-27T14:16:56.633Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/kisli/vmime/pull/363","https://github.com/kisli/vmime/commit/e85925eddc638939f0eeb7ee55ec047d04a760d8","https://github.com/kisli/vmime","https://github.com/kisli/vmime/blob/v0.9.2/src/vmime/utility/encoder/uuEncoder.cpp#L185-L190","https://hackmd.io/@haindpwn/vmime-uuencode-decoder-oob-write","https://www.vulncheck.com/advisories/vmime-through-0.9.2-stack-based-buffer-overflow-via-uuencode-decoder"],"sources":[{"name":"CVE","id":"CVE-2026-116738","modified":"2026-10-27T14:16:56.633Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116738"}],"assessments":[{"source":"CNA","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7},{"source":"CNA","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8}]}