CVE-2020-2499: Hard-coded Password Vulnerability in QES

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-24 · updated 2026-06-17
Weakness: CWE-259

Description

A hard-coded password vulnerability has been reported to affect earlier versions of QES. If exploited, this vulnerability could allow attackers to log in with a hard-coded password. QNAP has already fixed the issue in QES 2.1.1 Build 20200515 and later.

Affected products

QNAP Systems Inc. QES: before 2.1.1; 2.1.1, 2.1.1-build_20200211, 2.1.1-build_20200303, 2.1.1-build_20200319, 2.1.1-build_20200424 — fixed in 2.1.1

How to fix

Upgrade to a fixed version: QNAP Systems Inc. QES 2.1.1. Check the vendor advisory for mitigations.

References

https://www.qnap.com/zh-tw/security-advisory/qsa-20-19
https://www.qnap.com/zh-tw/security-advisory/qsa-20-19

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