CVE-2026-116738
VMime through 0.9.2 Stack-Based Buffer Overflow via uuencode Decoder
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-121 |
| 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:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
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#L185-L190 hackmd.io: https://hackmd.io/@haindpwn/vmime-uuencode-decoder-oob-write vulncheck.com: https://www.vulncheck.com/advisories/vmime-through-0.9.2-stack-based-buffer-overflow-via-uuencode-decoder
Credits
HaiND from the Post and Telecommunication Institute of Technology vincent-richard