CVE-2026-109828: Use of Uninitialized Variable in libsndfile
Description
A vulnerability was found in libsndfile up to 1.2.2. This issue affects the function wavlike_subchunk_parse of the file src/wavlike.c of the component WAV Parsing. Performing a manipulation results in use of uninitialized variable. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
CVSS v4.0
Score 5.3medium
Affected software
libsndfile
pkg:github/libsndfile/libsndfilecpe:2.3:a:libsndfile:libsndfile:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in libsndfile up to version 1.2.2 affects the wavlike_subchunk_parse function in src/wavlike.c, where an uninitialized variable is used. This flaw can be triggered remotely, potentially leading to undefined behavior. An exploit has been publicly disclosed, increasing the risk of exploitation. The vendor has not yet provided a fix or official response.
Potential Impact
The vulnerability allows remote attackers to trigger use of an uninitialized variable, which may lead to unpredictable program behavior or potential security issues. The CVSS 4.0 score is 5.3 (medium), indicating a moderate impact. No confirmed active exploitation in the wild is reported, but public exploit code exists.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the project has not responded or issued a fix, users should monitor official channels for updates and consider applying workarounds or limiting exposure to untrusted inputs until a patch is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-10-13T04:58:48.993Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ace64942cdf04f6568aecba
Added to database: 10/13/2026, 17:04:20 UTC
Last enriched: 10/13/2026, 17:34:08 UTC
Last updated: 10/13/2026, 23:48:08 UTC
Views: 7
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