Gbsplay through 0.0.103 contains a heap out-of-bounds read vulnerability in gbr_open() in gbs.c that fails to verify file length before scanning the GBR ROM title field. Attackers can supply a crafted GBR file of 0x21 to 0x162 bytes to read past the heap buffer, crashing gbsplay or leaking memory.
https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read
https://github.com/mmitch/gbsplay/issues/201
https://github.com/mmitch/gbsplay/commit/33812ed38d84b800b5a17f639ef6625f76290785
https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L810-L820
Published: 2026-10-26
Updated: 2026-10-27
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P
Severity: Low
Base Score: 3.3
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Severity: Low
Base Score: 4.8
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00127