{"id":"CVE-2026-116739","state":"PUBLISHED","title":"VMime through 0.9.2 Uninitialized Stack Memory Disclosure via uuencode Decoder","description":"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 MIME part with a large line length byte to leak up to 15 bytes of stack contents per line in decoded attachments.","publishedAt":"2026-10-26T21:52:38.496Z","updatedAt":"2026-10-26T21:52:38.496Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["kisli vmime"],"affected":[{"vendor":"kisli","product":"vmime","packageURL":"pkg:github/kisli/vmime","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.9.2","versionType":"custom"}],"repo":"https://github.com/kisli/vmime"}],"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#L311","https://hackmd.io/@haindpwn/vmime-uuencode-decoder-oob-write","https://www.vulncheck.com/advisories/vmime-through-0.9.2-uninitialized-stack-memory-disclosure-via-uuencode-decoder"],"weaknesses":["CWE-908"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116739.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116739","state":"PUBLISHED","datePublished":"2026-10-26T21:52:38.496Z","dateUpdated":"2026-10-26T21:52:38.496Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-26T20:23:36.215Z"},"containers":{"cna":{"title":"VMime through 0.9.2 Uninitialized Stack Memory Disclosure via uuencode Decoder","descriptions":[{"lang":"en","value":"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 MIME part with a large line length byte to leak up to 15 bytes of stack contents per line in decoded attachments."}],"affected":[{"vendor":"kisli","product":"vmime","packageURL":"pkg:github/kisli/vmime","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.9.2","versionType":"custom"}],"repo":"https://github.com/kisli/vmime"}],"references":[{"url":"https://github.com/kisli/vmime/pull/363","tags":["issue-tracking","patch"],"name":"Pull Request #363"},{"url":"https://github.com/kisli/vmime/commit/e85925eddc638939f0eeb7ee55ec047d04a760d8","tags":["patch"],"name":"Patch Commit"},{"url":"https://github.com/kisli/vmime","tags":["product"]},{"url":"https://github.com/kisli/vmime/blob/v0.9.2/src/vmime/utility/encoder/uuEncoder.cpp#L311","tags":["technical-description"]},{"url":"https://hackmd.io/@haindpwn/vmime-uuencode-decoder-oob-write","tags":["third-party-advisory"]},{"url":"https://www.vulncheck.com/advisories/vmime-through-0.9.2-uninitialized-stack-memory-disclosure-via-uuencode-decoder","name":"VulnCheck Advisory: VMime through 0.9.2 Uninitialized Stack Memory Disclosure via uuencode Decoder","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-908","lang":"en","description":"Use of Uninitialized Resource","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-26T21:52:38.496Z"},"datePublic":"2026-10-23T00:00:00.000Z","credits":[{"lang":"en","value":"HaiND from the Post and Telecommunication Institute of Technology","type":"finder"},{"lang":"en","value":"vincent-richard","type":"remediation developer"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}