CVE-2026-116725
gbsplay through 0.0.103 Out-of-Bounds Read via mapper_map ROM Bank Index
mmitch gbsplay
CVSS
6.8MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
gbsplay through 0.0.103 contains an out-of-bounds read vulnerability in mapper_map() 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 bank_get() read far past the heap ROM buffer and crash the player.
Text from CVE List
Affected versions 1
- gbsplayaffected: all versions through 0.0.103CVE List
References 6
- github.com/mmitch/gbsplay/commit/a281d80bc56ed63347daf740a2f7aa4f8516165aFixvia CVE List
- hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-readAdvisoryvia CVE List
- vulncheck.com/advisories/gbsplay-through-0.0.103-out-of-bounds-read-via-mapper-map-rom-bank-indexAdvisoryvia CVE List
- github.com/mmitch/gbsplay/issues/201Referencevia CVE List
- github.com/mmitch/gbsplayReferencevia CVE List
- github.com/mmitch/gbsplay/blob/0.0.103/mapper.c#L71-L103Referencevia CVE List