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TI-2026-80936 Aliases CVE-2026-116727GHSA-f826-v6gp-c5xh

Heap out-of-bounds read in gbsplay VGM file parsing

Priority MEDIUM 55CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

gbsplay through 0.0.103 contains a heap out-of-bounds read in vgm_open() in gbs.c, which walks the VGM command stream without bounds checks. An attacker who supplies a crafted VGM file with wait opcodes and no 0x66 terminator can read past the heap buffer and crash the player (CWE-125). The CVSS 4.0 vector indicates a local attack that requires a user to open the file.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00132 2nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
mmitchgbsplayup to 0.0.103—No fix listedCNA
  • gbsplay Vendormmitch Affected up to 0.0.103 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for gbsplay.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-116727
  2. 2026-10-27 Alias added: GHSA-f826-v6gp-c5xh
  3. 2026-11-05 CISA SSVC decision points changed
  4. 2026-11-05 Priority changed: LOW → MEDIUM

References

Patch 1

Advisory 1

Other 3

  • TI-2026-80934 Out-of-bounds read in gbsplay mapper_map ROM bank index CVSS 4.0MEDIUM 6.8
  • TI-2026-80935 Heap out-of-bounds read in gbsplay GBR title parsing CVSS 4.0MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences