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.
Published: 2026-10-26
Score: 6.8 Medium
EPSS: n/a
KEV: No
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Remediation

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Advisories

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History

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
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.
Title gbsplay through 0.0.103 Out-of-Bounds Read via mapper_map ROM Bank Index
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-26T21:52:28.842Z

Reserved: 2026-10-26T20:23:34.290Z

Link: CVE-2026-116725

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-26T22:16:56.210

Modified: 2026-10-26T22:16:56.210

Link: CVE-2026-116725

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T06:45:06Z

Weaknesses