CVE-2026-116739
VMime through 0.9.2 Uninitialized Stack Memory Disclosure via uuencode Decoder
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-908 |
| Vendor | kisli |
| Product | vmime |
| Published | Oct 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
kisli / vmime
0 ≤ 0.9.2
References
github.com: https://github.com/kisli/vmime/pull/363 github.com: https://github.com/kisli/vmime/commit/e85925eddc638939f0eeb7ee55ec047d04a760d8 github.com: https://github.com/kisli/vmime github.com: https://github.com/kisli/vmime/blob/v0.9.2/src/vmime/utility/encoder/uuEncoder.cpp#L311 hackmd.io: https://hackmd.io/@haindpwn/vmime-uuencode-decoder-oob-write vulncheck.com: https://www.vulncheck.com/advisories/vmime-through-0.9.2-uninitialized-stack-memory-disclosure-via-uuencode-decoder
Credits
HaiND from the Post and Telecommunication Institute of Technology vincent-richard