What’s Vulnerable › Vulnerabilities

CVE-2026-111154: libTiMidity through 0.2.8 Stack Out-of-Bounds Write via parse_gen in SoundFont Loader

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-15 · updated 2026-10-26
• Weakness: CWE-787

Description

libTiMidity through 0.2.8 contains a stack out-of-bounds write vulnerability in the SoundFont loader that allows attackers to corrupt stack memory via unchecked generator operators in parse_gen. Attackers can supply a crafted .sf2 file with out-of-range pgen/igen operator values to write chosen 16-bit values near the stack Layer object, causing crashes and stack memory corruption.

Affected products

• sezero libtimidity: from 0.2.8 through 0.2.8

References

• https://github.com/sezero/libtimidity
• https://github.com/sezero/libtimidity/blob/a52adf6aee2635e2a16797213a089c2180e67757/src/sndfont.c#L468-L480
• https://hackmd.io/@haind-pwn/libtimidity-soundfont-generator-oper-oob-write
• https://www.vulncheck.com/advisories/libtimidity-through-0.2.8-stack-out-of-bounds-write-via-parse-gen-in-soundfont-loader

Get alerted when CVE-2026-111154 or the next vulnerability affects your stack