CVE-2026-116727 json
gbsplay through 0.0.103 Heap Out-of-Bounds Read via vgm_open in gbs.c
published 2026-10-26 13 d ago modified 2026-11-05 3 d ago also EUVD-2026-110475
- cvss
- 3.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 2%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 d ago
Exploit prediction
0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackmd.io https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| CNA | 4.0 | 4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- mmitch gbsplay
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
github.com
/mmitch/gbsplay/commit/91b1f6df0abd3914f91caa528ec3213d731999e8
patch
-
hackmd.io
/@haindpwn/gbsplay-rom-bank-index-oob-read
third-party-advisory, exploit
-
github.com
/mmitch/gbsplay/issues/201
issue-tracking
-
github.com
/mmitch/gbsplay
product
-
github.com
/mmitch/gbsplay/blob/0.0.103/gbs.c#L996-L1010
technical-description
-
vulncheck.com
/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-vgm-open-in-gbs-c
third-party-advisory
Sources
- CVE List CVE-2026-116727
- NVD CVE-2026-116727
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