CVE-2021-43929

Name: CVE-2021-43929
Creator: NVD / NIST
Published: 2022-02-07T03:15:07.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2021-43929 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Improper neutralization of special elements in output used by a downstream component ('Injection') vulnerability in work flow management in Synology DiskStation Manager (DSM) before 7.0.1-42218-2 allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

Improper neutralization of special elements in output used by a downstream component ('Injection') vulnerability in work flow management in Synology DiskStation Manager (DSM) before 7.0.1-42218-2 allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.59%

43.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Synology	Diskstation Manager	>= 6.2, < 6.2.4-25556-3
Synology	Diskstation Manager	>= 7.0, < 7.0.1-42218-2

References

https://www.synology.com/security/advisory/Synology_SA_22_01Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_22_01Vendor Advisory

Timeline

Published: Feb 7, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43929?

How severe is CVE-2021-43929?

CVE-2021-43929 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43929?

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-2021-43929?

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

Scan your code now

Source: NVD / NIST