Stack-Based Buffer Overflow in VMime by Kisli
CVE-2026-116738
8.7HIGH
What is CVE-2026-116738?
VMime versions up to 0.9.2 are vulnerable to a stack-based buffer overflow due to an integer underflow in the uuEncoder::decode function. This flaw can be exploited by remote attackers by crafting specific uuencoded MIME parts in emails. When the uuencoded line's length character is 'b' but does not conform to a 'begin' line, it can corrupt stack memory, leading to application crashes or even execution of arbitrary code.
Affected Version(s)
vmime 0 <= 0.9.2
References
CVSS V4
Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown
Timeline
Vulnerability published
Vulnerability Reserved
Credit
HaiND from the Post and Telecommunication Institute of Technology
vincent-richard