{"id":"CVE-2026-116739","title":"VMime through 0.9.2 Uninitialized Stack Memory Disclosure via uuencode Decoder","summary":"VMime through 0.9.2 contains an information disclosure vulnerability in the uuEncoder::decode function that writes uninitialized stack memory into decoded output for over-long lines. Attackers can send a crafted uuencode or x-uuencode MI…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-908"],"vendor":"kisli","product":"vmime","affected":["vmime <= 0.9.2"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T21:52:38.496Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116739","references":[{"url":"https://github.com/kisli/vmime/pull/363","label":"Pull Request #363"},{"url":"https://github.com/kisli/vmime/commit/e85925eddc638939f0eeb7ee55ec047d04a760d8","label":"Patch Commit"},{"url":"https://github.com/kisli/vmime"},{"url":"https://github.com/kisli/vmime/blob/v0.9.2/src/vmime/utility/encoder/uuEncoder.cpp#L311"},{"url":"https://hackmd.io/@haindpwn/vmime-uuencode-decoder-oob-write"},{"url":"https://www.vulncheck.com/advisories/vmime-through-0.9.2-uninitialized-stack-memory-disclosure-via-uuencode-decoder","label":"VulnCheck Advisory: VMime through 0.9.2 Uninitialized Stack Memory Disclosure via uuencode Decoder"}],"tags":["cve.org"],"epss":0.00252,"epssPercentile":0.16567,"ingestedAt":"2026-10-27T16:11:59.120Z","slug":"CVE-2026-116739","body":"## Overview\n\nVMime through 0.9.2 contains an information disclosure vulnerability in the uuEncoder::decode function that writes uninitialized stack memory into decoded output for over-long lines. Attackers can send a crafted uuencode or x-uuencode MIME part with a large line length byte to leak up to 15 bytes of stack contents per line in decoded attachments.\n\n## Affected\n\n- `vmime <= 0.9.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}