CVE-2021-42094
CVE-2021-42094 is a critical-severity vulnerability in Zammad with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Zammad
- Published:
- Last modified:
Description
An issue was discovered in Zammad before 4.1.1. Command Injection can occur via custom Packages.
Frequently asked questions
- What is CVE-2021-42094?
- An issue was discovered in Zammad before 4.1.1. Command Injection can occur via custom Packages.
- How severe is CVE-2021-42094?
- CVE-2021-42094 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-42094 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-42094?
- CVE-2021-42094 affects Zammad. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-42094?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-42094 published?
- CVE-2021-42094 was published on 2021-10-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*
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