CVE-2021-43929

Severity: medium (CVSS 5.4 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: 2022-02-07 · updated 2026-06-17
Weakness: CWE-74

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.

Affected products

Synology DiskStation Manager: from 6.2 before 6.2.4-25556-3; from 7.0 before 7.0.1-42218-2 — fixed in 6.2.4-25556-3, 7.0.1-42218-2

How to fix

Upgrade to a fixed version: Synology DiskStation Manager 6.2.4-25556-3, 7.0.1-42218-2. Check the vendor advisory for mitigations.

References

https://www.synology.com/security/advisory/Synology_SA_22_01
https://www.synology.com/security/advisory/Synology_SA_22_01

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