CVE-2026-111154: Out-of-bounds Write in sezero libtimidity
Description
CVE-2026-111154 is a stack out-of-bounds write vulnerability in libTiMidity version 0.2.8 within the SoundFont loader. It occurs due to unchecked generator operators in the parse_gen function, allowing crafted .sf2 files with out-of-range operator values to corrupt stack memory. This can cause crashes and memory corruption.
CVSS v4.0
Score 6.9medium
Affected software
sezero
libtimidity
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
libTiMidity through version 0.2.8 contains a stack out-of-bounds write vulnerability in the SoundFont loader component. The flaw arises from insufficient validation of pgen/igen operator values in the parse_gen function. An attacker can supply a specially crafted .sf2 file with out-of-range operator values, leading to writes of chosen 16-bit values near the stack Layer object. This results in stack memory corruption and potential application crashes.
Potential Impact
Successful exploitation can cause stack memory corruption and application crashes. The vulnerability requires local access (AV:L) and user interaction (UI:P), with no privileges required (PR:N). It has a medium severity with a CVSS 4.0 base score of 6.9. There are no known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently provided. Until a patch is available, avoid processing untrusted or maliciously crafted .sf2 files to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-15T17:04:01.298Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad123b82cdf04f65652b70f
Added to database: 10/15/2026, 19:04:24 UTC
Last enriched: 10/15/2026, 19:34:27 UTC
Last updated: 10/15/2026, 19:34:27 UTC
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.