CVE-2021-42090
9.8 CRITICALAn issue was discovered in Zammad before 4.1.1
Published: 2021-10-07 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 9.8 CRITICAL
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-502
Affected products
| Vendor | Product |
|---|---|
| zammad | zammad |
Description
An issue was discovered in Zammad before 4.1.1. The Form functionality allows remote code execution because deserialization is mishandled.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-42090
- [Vendor advisory]https://zammad.com/en/advisories/zaa-2021-14
- [Vendor advisory]https://zammad.com/en/advisories/zaa-2021-14
Related CVEs
Same vendor
- CVE-2021-42137 — An issue was discovered in Zammad before 5.0.1 (5.3 MEDIUM)
- CVE-2021-42091 — An issue was discovered in Zammad before 4.1.1 (9.1 CRITICAL)
- CVE-2021-42089 — An issue was discovered in Zammad before 4.1.1 (7.5 HIGH)
- CVE-2021-42088 — An issue was discovered in Zammad before 4.1.1 (6.1 MEDIUM)
- CVE-2021-42087 — An issue was discovered in Zammad before 4.1.1 (4.9 MEDIUM)
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