CVE-2021-38678

Name: CVE-2021-38678
Creator: NVD / NIST
Published: 2022-01-14T01:15:08.423+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2021-38678 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An open redirect vulnerability has been reported to affect QNAP device running QcalAgent. If exploited, this vulnerability allows attackers to redirect users to an untrusted page that contains malware. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

An open redirect vulnerability has been reported to affect QNAP device running QcalAgent. If exploited, this vulnerability allows attackers to redirect users to an untrusted page that contains malware. We have already fixed this vulnerability in the following versions of QcalAgent: QcalAgent 1.1.7 and later

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.57%

42.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qnap	Qcalagent	< 1.1.7

References

https://www.qnap.com/en/security-advisory/qsa-21-60Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-21-60Vendor Advisory

Timeline

Published: Jan 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-38678?

How severe is CVE-2021-38678?

CVE-2021-38678 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38678?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-38678?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST