Medium severity · published Oct 15, 2026
CVE-2026-111154
libTiMidity through 0.2.8 Stack Out-of-Bounds Write via parse_gen in SoundFont Loader
6.1
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libtimidity · sezero
0.2.8 through 0.2.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111154
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111154
github.com
https://github.com/sezero/libtimidity
github.com
https://github.com/sezero/libtimidity/blob/a52adf6aee2635e2a16797213a089c2180e67757/src/sndfont.c#L468-L480
hackmd.io
https://hackmd.io/@haind-pwn/libtimidity-soundfont-generator-oper-oob-write
www.vulncheck.com
https://www.vulncheck.com/advisories/libtimidity-through-0.2.8-stack-out-of-bounds-write-via-parse-gen-in-soundfont-loader
More from libtimidity
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CVE-2026-111156
libTiMidity through 0.2.8 Out-of-Bounds Access via SoundFont Preset Header
6.1
CVE-2026-111155
libTiMidity through 0.2.8 Out-of-Bounds Read via SoundFont Loader sndfont.c