6.8
Medium
gbsplay through 0.0.103 contains an out-of-bounds read vulnerability in mappermap() in mapper.c that fails to reject ROM bank indexes…
CVE-2026-116725
gbsplay through 0.0.103 contains an out-of-bounds read vulnerability in mappermap() in mapper.c that fails to reject ROM bank indexes beyond the ROM size, causing an underflowed bank length. Attackers can supply crafted .gbr, .gbs or .gb files with malicious bank indexes to make bankget() read far past the heap ROM buffer and crash the player.
Assessment
- CVSS
- 6.8 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 26 October 2026
- Last updated
- 27 October 2026
- Weakness
- CWE-125
- Assigner
- disclosure@vulncheck.com
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/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
At the source
References
- https://github.com/mmitch/gbsplay
- https://github.com/mmitch/gbsplay/blob/0.0.103/mapper.c#L71-L103
- https://github.com/mmitch/gbsplay/commit/a281d80bc56ed63347daf740a2f7aa4f8516165a
- https://github.com/mmitch/gbsplay/issues/201
- https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read
- https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-out-of-bounds-read-via-mapper-map-rom-bank-index
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2026-116725