gbsplay through 0.0.103 contains an out-of-bounds read vulnerability in mapper_map() in mapper.c that fails to reject
Affects gbsplaySource GCVE Database
Not known to be exploited · CVSS 6.8 Medium.
Data as of 27 Oct 2026, 02:27 UTC
- Affects
- player application. gbsplay through 0.0.103
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubmmitch/gbsplaypkg:github/mmitch/gbsplayOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should avoid opening untrusted or suspicious .gbr, .gbs, or .gb files with gbsplay 0.0.103 to prevent crashes. Monitor vendor advisories for updates or patches addressing this issue.
Description
gbsplay version 0.0.103 contains an out-of-bounds read vulnerability in the mapper_map() function within mapper.c. This flaw occurs because the function does not properly reject ROM bank indexes that exceed the ROM size, leading to an underflowed bank length. Crafted .gbr, .gbs, or .gb files with malicious bank indexes can cause the bank_get() function to read beyond the allocated heap ROM buffer, resulting in a crash of the player application.
References
- nvd.nist.gov/vuln/detail/CVE-2026-116725 (opens in a new tab)
- github.com/mmitch/gbsplay/issues/201 (opens in a new tab)
- github.com/mmitch/gbsplay/commit/a281d80bc56ed63347daf740a2f7aa4f8516165a (opens in a new tab)
- github.com/mmitch/gbsplay (opens in a new tab)
- github.com/mmitch/gbsplay/blob/0.0.103/mapper.c (opens in a new tab)
- hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read (opens in a new tab)
- vulncheck.com/advisories/gbsplay-through-0.0.103-out-of-bounds-read-via-mapper-map-rom-bank-index (opens in a new tab)