---
cve: "CVE-2026-39919"
severity: "CRITICAL"
cvss: 9.3
epss: "0.5%"
vendor: "Artifex Software"
kev: false
exploited: false
published: "2026-09-15 15:17:14"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-06T03:05:21+02:00"
---

# CVE-2026-39919

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

Ghostscript before 10.08.0 contains a heap-based buffer overflow vulnerability in the JPEG 2000 output adapter (base/sjpx_openjpeg.c) that allows attackers to cause memory corruption by supplying a crafted PDF containing a JPEG 2000 image with mismatched component subsampling factors. When image components declare different subsampling values, the non-samescale sub-byte-depth output path allocates a row buffer sized for packed output but writes a full byte per output column regardless of bit depth, overflowing the allocation and corrupting internal chunk-allocator metadata to achieve code execution.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-01 15:19:56
- CNA-CVSS: **9.3** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 0a8bf88e39db07b0751a58d6ec1cf992073e4dc1 (Commit)
- b084b535a1f5e10d23d34f23a0ea057bb67d8f9d (Commit)

## BSI-Hinweise (deutsch)

- [Ghostscript: Schwachstelle ermöglicht Codeausführung und Manipulation von Daten](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3408) — _BSI-Einstufung: hoch_
  Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Ghostscript ausnutzen, um beliebigen Programmcode auszuführen, und um Daten zu manipulieren.

## Referenzen

- <https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs10080>
- <https://github.com/ArtifexSoftware/ghostpdl/commit/0a8bf88e39db07b0751a58d6ec1cf992073e4dc1>
- <https://bugs.ghostscript.com/show_bug.cgi?id=709666>
- <https://www.vulncheck.com/advisories/ghostscript-heap-buffer-overflow-via-jpeg-2000-output-adapter>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-39919) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_