What’s Vulnerable › Vulnerabilities

CVE-2021-38678: Open Redirect Vulnerability in QcalAgent

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-14 · updated 2026-06-17
• Weakness: CWE-601

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

Affected products

• QNAP Systems Inc. QcalAgent: before 1.1.7 — fixed in 1.1.7

How to fix

Upgrade to a fixed version: QNAP Systems Inc. QcalAgent 1.1.7. Check the vendor advisory for mitigations.

References

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

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