CVE-2020-25847: Command Injection Vulnerability in QTS and QuTS hero

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-29 · updated 2026-06-17
Weakness: CWE-77

Description

This command injection vulnerability allows attackers to execute arbitrary commands in a compromised application. QNAP have already fixed this vulnerability in the following versions of QTS and QuTS hero.

Affected products

QNAP QTS: before 4.5.1.1495 — fixed in 4.5.1.1495
QNAP Systems Inc. QuTS hero: before h4.5.1.1491 — fixed in h4.5.1.1491

How to fix

Upgrade to a fixed version: QNAP QTS 4.5.1.1495; QNAP Systems Inc. QuTS hero h4.5.1.1491. Check the vendor advisory for mitigations.

References

https://www.qnap.com/en/security-advisory/qsa-20-20
https://www.qnap.com/en/security-advisory/qsa-20-20

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