CVE-2021-26563
MEDIUM
6.7
CVSS Score
Published: February 26, 2021 at 09:45 PM UTC
Updated: June 17, 2026 at 03:43 AM UTC
7 products affected across 1 vendorDiskStation ManagerVS960HD FirmwareDiskstation Manager Unified Controller
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Severity
MEDIUM6.7
Exploit prediction
EPSS 0.5%
Description
Incorrect authorization vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows local users to execute arbitrary code via unspecified vectors.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 6.2.4-25553
Affected range stops below 6.2.4-25553, so it looks safe — our inference, not a vendor statement
Skynas· Synologydevice
80%All versions
Uc3200· Synologydevice
80%All versions
VS960HD· Synologydevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.synology.com/security/advisory/Synology_SA_21_03x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1158CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-863
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