---
id: CVE-2026-116727
title: gbsplay through 0.0.103 Heap Out-of-Bounds Read via vgm_open in gbs.c
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 …
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'
cvssSource: cna
cwe:
  - CWE-125
vendor: mmitch
product: gbsplay
affected:
  - gbsplay <= 0.0.103
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T21:52:30.198Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116727'
references:
  - url: 'https://github.com/mmitch/gbsplay/issues/201'
    label: 'GitHub Issue #201'
  - url: 'https://github.com/mmitch/gbsplay'
  - url: >-
      https://github.com/mmitch/gbsplay/commit/91b1f6df0abd3914f91caa528ec3213d731999e8
  - url: 'https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L996-L1010'
  - url: 'https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read'
  - url: >-
      https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-vgm-open-in-gbs-c
    label: >-
      VulnCheck Advisory: gbsplay through 0.0.103 Heap Out-of-Bounds Read via
      vgm_open in gbs.c
tags:
  - cve.org
epss: 0.00132
epssPercentile: 0.02773
ingestedAt: '2026-10-27T16:11:59.122Z'
---

## Overview

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

- `gbsplay <= 0.0.103`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.