CVE-2026-116726— gbsplay through 0.0.103 Heap Out-of-Bounds Read via gbr_open GBR Title

Quick assessment

Affected

mmitch gbsplay

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

gbsplay 0.0.103 及更早版本在文件的函数中存在堆越界读取漏洞。该漏洞源于在扫描 GBR ROM 标题字段之前未验证文件长度。攻击者可构造一个长度为 0x21 至 0x162 字节的恶意 GBR 文件，从而读取堆缓冲区之外的数据，导致 gbsplay 崩溃或造成内存信息泄露。

CVSS 3.3 · Low Updated Oct 27, 2026

Possible ATT&CK Techniques 2 AI

T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

gbsplay through 0.0.103 Heap Out-of-Bounds Read via gbr_open GBR Title

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

跨界内存读

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
mmitch	gbsplay	0 ~ 0.0.103	-

II. Public POCs for CVE-2026-116726

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-116726

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Other References for CVE-2026-116726 (6)

https://github.com/mmitch/gbsplay/commit/33812ed38d84b800b5a17f639ef6625f76290785 patch
https://github.com/mmitch/gbsplay product
https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L810-L820 technical-description
https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read third-party-advisory
https://github.com/mmitch/gbsplay/issues/201 issue-tracking
https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-gbr-open-gbr-title third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-116726

Same Patch Batch · mmitch · 2026-10-26 · 3 CVEs total

CVE-2026-116725	5.5 MEDIUM	gbsplay through 0.0.103 Out-of-Bounds Read via mapper_map ROM Bank Index
CVE-2026-116727	3.3 LOW	gbsplay through 0.0.103 Heap Out-of-Bounds Read via vgm_open in gbs.c

IV. Related Vulnerabilities

Same product: gbsplay

Same vendor: mmitch

Same weakness: CWE-125