CVE-2021-42090

CRITICAL

Zammad < 4.1.1 - Remote Code Execution via Form Deserialization

Title source: llm
STIX 2.1

Description

An issue was discovered in Zammad before 4.1.1. The Form functionality allows remote code execution because deserialization is mishandled.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://zammad.com/en/advisories/zaa-2021-14

Scores

CVSS v3 9.8
EPSS 0.0226
EPSS Percentile 80.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-502
Status published
Products (1)
zammad/zammad < 4.1.1
Published Oct 07, 2021
Tracked Since Feb 18, 2026