CVE-2026-105240
MEDIUM
5,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: none
Description
AI Translation Available
Improper Neutralization of Null Byte or NUL Character vulnerability in the OutputDebugStringAppender of Apache log4net.
A NUL character in logged content ended the debug output record at that point, so everything the layout rendered after it, including exception text and trailing fields, was silently lost. A party whose data reaches a log message could hide the rest of that record. Only applications on Windows that use OutputDebugStringAppender are affected.
This issue affects Apache log4net: from 1.2.9 before 3.5.0.
Users are recommended to upgrade to version 3.5.0, which fixes the issue.
158
Improper Neutralization of Null Byte or NUL Character
IncompleteCommon Consequences
Security Scopes Affected:
Integrity
Potential Impacts:
Unexpected State
Applicable Platforms
Languages:
Not Language-Specific, C, C++
https://github.com/apache/logging-log4net/commit/6046fe9d7f353b49fe995361c071ec…
https://github.com/apache/logging-log4net/pull/315
https://lists.apache.org/thread.html/gyw2d4ppy82t1vlpdknkfd1nmzp21z17