CVE-2026-116738

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/kisli/vmime
https://github.com/kisli/vmime/blob/v0.9.2/src/vmime/utility/encoder/uuEncoder.cpp#L185-L190
https://github.com/kisli/vmime/commit/e85925eddc638939f0eeb7ee55ec047d04a760d8
https://github.com/kisli/vmime/pull/363
https://hackmd.io/@haindpwn/vmime-uuencode-decoder-oob-write
https://www.vulncheck.com/advisories/vmime-through-0.9.2-stack-based-buffer-overflow-via-uuencode-decoder

Configurations

No configuration.

History

26 Oct 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-26 22:16

Updated : 2026-10-27 16:04

NVD link : CVE-2026-116738

Mitre link : CVE-2026-116738

CVE.ORG link : CVE-2026-116738

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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