CVE-2026-111150
ValleyBell libvgm through commit a6eed945 Heap Out-of-Bounds Read via DecompressDataBlk
ValleyBell libvgm
CVSS
6.8MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 21 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.13%Chance of exploitation activity in the next 30 days, higher than 2% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
ValleyBell libvgm through commit a6eed945 contains a heap out-of-bounds read vulnerability in the PCM data-block decompressor caused by an unbounded compression-table index. Attackers can supply a crafted .vgm file with a small type 0x7F table and wider compressed values, causing DecompressDataBlk to over-read heap memory and crash consumers.
Text from CVE List
Affected versions 1
- libvgmaffected: all versions through a6eed945ecf4e5a25cf82004779c6f7e4fd5c319CVE List
References 5
- vulncheck.com/advisories/valleybell-libvgm-through-commit-a6eed945-heap-out-of-bounds-read-via-decompressdatablkAdvisoryvia CVE List
- hackmd.io/@haind-pwn/libvgm-pcm-compression-table-oob-readExploitvia CVE List
- github.com/ValleyBell/libvgm/blob/a6eed945ecf4e5a25cf82004779c6f7e4fd5c319/player/dblk_compr.c#L727-L751Referencevia CVE List
- github.com/ValleyBell/libvgm/blob/a6eed945ecf4e5a25cf82004779c6f7e4fd5c319/player/dblk_compr.c#L183-L190Referencevia CVE List
- github.com/ValleyBell/libvgmReferencevia CVE List