What’s Vulnerable › Vulnerabilities

CVE-2021-34358: CSRF Vulnerability in QmailAgent

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-20 · updated 2026-06-17
• Weakness: CWE-352

Description

We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later

Affected products

• QNAP Systems Inc. QmailAgent: before 3.0.2 — fixed in 3.0.2

How to fix

Upgrade to a fixed version: QNAP Systems Inc. QmailAgent 3.0.2. Check the vendor advisory for mitigations.

References

• https://www.qnap.com/en/security-advisory/qsa-21-49
• https://www.qnap.com/en/security-advisory/qsa-21-49

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