CVE-2021-34358

Name: CVE-2021-34358
Creator: NVD / NIST
Published: 2021-11-20T01:15:08.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2021-34358 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.36%

28.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Qnap	Qmailagent	< 3.0.2

References

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

Timeline

Published: Nov 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34358?

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

How severe is CVE-2021-34358?

CVE-2021-34358 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34358?

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-2021-34358?

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

Scan your code now

Source: NVD / NIST