---
cve: "CVE-2026-102490"
severity: "HIGH"
cvss: 8.5
epss: "0.5%"
vendor: "Zammad GmbH"
kev: true
exploited: true
published: "2026-09-30 17:16:40"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-10T08:22:22+02:00"
---

# CVE-2026-102490

> 8.5 HIGH · ⚠️ CISA KEV (10 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

Zammad packages built with packager.io (DEB and RPM) could have allowed a local attacker who already had file system write privileges as the unprivileged zammad service account to escalate to full root privileges on the host. Service processes began running as root and executed files that were owned and writable by the zammad account before dropping their identity to that account. An attacker holding that foothold could have escalated within seconds, because the affected services were restarted automatically whenever they stopped; no administrator interaction was required. Only installations from the DEB and RPM packages were affected — installations from source or the official container images were not. All released packaged versions were affected.

## CNA-Record (Kanon, cvelistV5)

- CNA: **DIVD**
- State: PUBLISHED
- Stand: 2026-10-07 14:03:07
- CNA-CVSS: **8.5** (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/AU:Y/V:D`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA KEV seit: **02.10.2026**
- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **active**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/AU:Y/V:D
```

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

## BSI-Hinweise (deutsch)

- [Zammad: Schwachstelle ermöglicht Privilegienerweiterung](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3839) — _BSI-Einstufung: mittel_
  Ein lokaler Angreifer kann eine Schwachstelle in Zammad ausnutzen, um seine Privilegien zu erweitern
- [Zammad: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode und Privilegieneskalation](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3694) — _BSI-Einstufung: kritisch_
  Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Zammad ausnutzen, um beliebigen Programmcode mit Benutzerrechten auszuführen und um Root-Rechte zu erlangen.

## Referenzen

- <https://csirt.divd.nl/DIVD-2026-00015>
- <https://csirt.divd.nl/CVE-2026-102490>
- <https://zammad.com/en/advisories/cve-2026-102489-cve-2026-102490>
- <https://github.com/zammad/zammad/security/advisories/GHSA-p97w-927q-8vxq>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102490>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-102490/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_