---
cve: "CVE-2026-40333"
severity: "MEDIUM"
cvss: 6.1
epss: "22%"
vendor: "gphoto"
kev: false
exploited: false
published: "2026-04-17 23:11:11"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T05:15:54+02:00"
---

# CVE-2026-40333

> 6.1 MEDIUM · 🧪 PoC

## Beschreibung

libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.

## CVSS-Vektor

```
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Physisch | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 1817ecead20c2aafa7549dac9619fe38f47b2f53 (Commit)

## Referenzen

- <https://github.com/gphoto/libgphoto2/security/advisories/GHSA-hq94-cp6h-3gjp>
- <https://github.com/gphoto/libgphoto2/commit/1817ecead20c2aafa7549dac9619fe38f47b2f53>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-40333) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_