TI-2021-19690 Aliases CVE-2021-43928 GHSA-xcmm-3w7w-cqq9

OS command injection in Synology Mail Station

MEDIUM 46CWE-78Published 2022-02-07 · Updated 2024-09-17

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability in mail sending and receiving component in Synology Mail Station before 20211105-10315 allows remote authenticated users to execute arbitrary commands via unspecified vectors.

Why it matters now

EPSS 0.01865 79th percentileScored 2026-11-07

Fix Fixed Mail Station (Synology): 20211105-10315

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Synology	Mail Station	before 20211105-10315	20211105-10315	Patch available	CNA

Mail Station VendorSynology Affected before 20211105-10315 Fixed in 20211105-10315 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:synology:mail_station::::::::	before 20211105	Vulnerable	Synology

cpe:2.3:a:synology:mail_station:*:*:*:*:*:*:*:* Versions before 20211105 Vulnerable ·Synology

Remediation

Fix · CNA Mail Station (Synology) Fixed in 20211105-10315

Timeline

2026-10-02 Threatist record created from CVE-2021-43928
2026-10-03 Alias added: GHSA-xcmm-3w7w-cqq9

References

Advisory 1

https://www.synology.com/security/advisory/Synology_SA_21_28

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences