Zammad GmbH Zammad Improper Privilege Management Vulnerability (CVE-2026-102490) is being actively exploited, CISA warns
CISA added CVE-2026-102490 (Zammad GmbH Zammad) to its Known Exploited Vulnerabilities catalog on October 2, 2026, which means there is reliable evidence of exploitation in the wild. 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.
Excerpt from the primary source: CISA Known Exploited Vulnerabilities
Who is affected
Enterprises · Security professionals
Affected technology: Zammad
Why it matters
CISA lists this as exploited in the wild. Unpatched Zammad systems are exposed to active attacks now.
Automated: stated only from CISA listings and the exploitation evidence in the sources below.
What you should do · Act now
Treat this as an emergency. Identify every system running Zammad, apply the vendor's fix or published mitigations immediately, and check for signs of compromise. Patching alone does not remove an attacker who already got in.
CISA's required action for CVE-2026-102489: "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." US federal civilian agencies must comply by October 5, 2026.
Automated guidance based on this story's classification. Check the linked advisories for specifics.
Sources
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Government advisory
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