---
cve: "CVE-2026-116726"
severity: "MEDIUM"
cvss: 4.8
epss: ""
vendor: "mmitch"
kev: false
exploited: false
published: "2026-10-26 22:16:56"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-31T08:23:03+01:00"
---

# CVE-2026-116726

> 4.8 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-27 14:17:32
- CNA-CVSS: **4.8** (`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`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Schwachstellen-Klasse

- **CWE-125** — Out-of-bounds Read
  The product reads data past the end, or before the beginning, of the intended buffer.

## Angriffsmuster (CAPEC)

- [CAPEC-540 — Overread Buffers](https://capec.mitre.org/data/definitions/540.html) _(Severity: High)_

## Patch verfügbar (OSV)

- 33812ed38d84b800b5a17f639ef6625f76290785

## Referenzen

- <https://github.com/mmitch/gbsplay/issues/201>
- <https://github.com/mmitch/gbsplay>
- <https://github.com/mmitch/gbsplay/commit/33812ed38d84b800b5a17f639ef6625f76290785>
- <https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L810-L820>
- <https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read>
- <https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-gbr-open-gbr-title>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-116726/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_