CVEs / CVE-2026-102490
CVE-2026-102490: Zammad GmbH Zammad Improper Privilege Management Vulnerability
- Known exploited in the CISA KEV catalog since 2 Oct 2026
- high 7.8 CVSS 3.1 (NVD)
- EPSS 10.9% chance of exploitation in the next 30 days, higher than 95% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Zammad GmbH Zammad contains an improper privilege management vulnerability that can allow the local zammad user to escalate privileges to root. This vulnerability can be chained with CVE-2026-102489.
Description
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Zammad GmbH Zammad | from 1.5.0, before 7.2.2 | 7.2.2 |
Exploitation
| In CISA KEV since | 2 Oct 2026 |
|---|---|
| Due date for US federal agencies | 5 Oct 2026 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-269 |
References
- CVE-2026-102490 on NVD
- CVE-2026-102490 in the CISA KEV catalog
- https://zammad.com/en/product/releases/ (cited by CISA)
- https://community.zammad.org/t/take-care-local-privilege-escalation-cve-2026-102490-is-reported-as-being-actively-exploited/21297/2 (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- CVE-2026-102490 on OSV
- https://csirt.divd.nl/CVE-2026-102490 Third Party Advisory
- https://csirt.divd.nl/DIVD-2026-00015 Third Party Advisory
- https://github.com/zammad/zammad/security/advisories/GHSA-p97w-927q-8vxq Vendor Advisory
- https://zammad.com/en/advisories/cve-2026-102489-cve-2026-102490 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102490 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.