Hard-coded Password Vulnerability in QES

published 2020-12-24 5y ago modified 2026-06-17 4mo ago also EUVD-2020-22292

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

QNAP Systems Inc. QES 2.1.1

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Exploit prediction

1.38% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:N
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

QNAP Systems Inc. QES

Classification

Weakness

CWE-259 Use of Hard-coded Password
CWE-798 Use of Hard-coded Credentials
CWE-522 Insufficiently Protected Credentials

References

qnap.com /zh-tw/security-advisory/qsa-20-19
vendor-advisory

Sources

CVE List CVE-2020-2499
NVD CVE-2020-2499

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