Back to Database
Status published
Critical
CVE-2021-27649
Use after free vulnerability in file transfer protocol component in...
Vulnerability Description
Use after free vulnerability in file transfer protocol component in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via unspecified vectors.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-27649
Credits & Attribution
No credits recorded in the NVD database.
More from Synology
View All →CVE-2025-8074
Origin validation error vulnerability in BeeDrive in Synology BeeDrive for...
Medium
5.6
CVE-2025-66593
An origin validation error vulnerability in Synology Assistant before 7.0.6-50085...
Medium
6.1
CVE-2025-66592
An origin validation error vulnerability in Synology Active Backup for...
Medium
6.1
CVE-2025-54160
Improper limitation of a pathname to a restricted directory ('Path...
High
7.8
CVE-2025-54159
Missing authorization vulnerability in BeeDrive in Synology BeeDrive for desktop...
High
7.5
Affected Vendor
Synology
View all reports →Affected Software
DiskStation Manager (DSM)
Vulnerable Versions:
unspecified
Timeline
Official Publish:
June 23rd, 2021
Last Modified:
September 16th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H