CVE-2026-116727 Details
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.
A heap out-of-bounds read vulnerability has been identified in gbsplay versions through 0.0.103. The issue arises in the VGM loader function, vgm_open(), within the gbs.c file. This vulnerability allows attackers to craft a VGM file that exploits the command stream processing, leading to unauthorized memory access. The VGM file can be manipulated to include wait opcodes without the required terminator, causing the player to read beyond the allocated heap buffer and potentially crash.
The vulnerability has been fixed in version 0.0.104. Users are advised to update to this version.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 26, 2026CISA-ADP
Assessed Nov 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read | CISA-ADP | BundleExploitRemedyTechnical Analysis |
| https://github.com/mmitch/gbsplay | [email protected] | Vendor |
| https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L996-L1010 | [email protected] | Source CodeVendor |
| https://github.com/mmitch/gbsplay/commit/91b1f6df0abd3914f91caa528ec3213d731999e8 | [email protected] | Source CodeVendor |
| https://github.com/mmitch/gbsplay/issues/201 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read | [email protected] | BundleExploitRemedyTechnical Analysis |
| https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-vgm-open-in-gbs-c | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| gbsplay | <= 0.0.103 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | CVE Modified | CISA-ADP |
| Oct 26, 2026 | New CVE Received | [email protected] |