EUVD-2026-26442
Incorrect Provision of Specified Functionality (CWE-684)
2026-04-30
mitre
5.9
CVSS 3.1
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CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Lifecycle Timeline
6
Patch released
May 01, 2026 - 18:16 nvd
Patch available
Patch available
Apr 30, 2026 - 23:02 EUVD
Analysis Generated
Apr 30, 2026 - 22:00 vuln.today
EUVD ID Assigned
Apr 30, 2026 - 21:45 euvd
EUVD-2026-26442
Analysis Generated
Apr 30, 2026 - 21:45 vuln.today
CVE Published
Apr 30, 2026 - 00:00 nvd
MEDIUM 5.9
DescriptionNVD
In Exim before 4.99.2, on systems using musl libc (not glibc), an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dn_expand oddity in octal printing.
AnalysisAI
Denial of service in Exim before 4.99.2 on musl libc systems allows remote attackers to crash mail server connection instances by sending malformed DNS PTR records that trigger an octal printing bug in the dn_expand function. The vulnerability requires high network complexity to exploit but results in service unavailability for affected connections. …
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External POC / Exploit Code
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