Vulnerability · Published Oct 26, 2026 · Assigned by VulnCheck
CVE-2026-116727gbsplay through 0.0.103 Heap Out-of-Bounds Read via vgm_open in gbs.c
Low 3.3
In plain English
A low-severity out-of-bounds read in gbsplay from mmitch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.1%top 97.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
gbsplay through 0.0.103 contains a heap out-of-bounds read vulnerability in vgm_open() in gbs.c that walks the VGM command stream without bounds checks. Attackers can supply a crafted VGM file with wait opcodes and no 0x66 terminator to read past the heap buffer and crash the player.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | gbsplay | no fix listed | UBUNTU-CVE-2026-116727 |
| Ubuntu:24.04:LTS | gbsplay | no fix listed | UBUNTU-CVE-2026-116727 |
| Ubuntu:26.04:LTS | gbsplay | no fix listed | UBUNTU-CVE-2026-116727 |
| Ubuntu:26.10 | gbsplay | no fix listed | UBUNTU-CVE-2026-116727 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
References
- GitHub Issue #201 issue-tracking
- https://github.com/mmitch/gbsplay product
- https://github.com/mmitch/gbsplay/commit/91b1f6df0abd3914f91caa528ec3213d731999e8 patch
- https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L996-L1010 technical-description
- https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read third-party-advisory
- VulnCheck Advisory: gbsplay through 0.0.103 Heap Out-of-Bounds Read via vgm_open in gbs.c third-party-advisory