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CVE-2021-26561

Published: Feb 26, 2021Updated: Jan 14, 2025 Sources: CVE List NVDCWE-121
9.0CRITICAL
NVD MITRE
EPSS Score
1.9%
Top 23.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Stack-based buffer overflow vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary code via syno_finder_site HTTP header.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-121CWE-119

Affected Products

Synology
commercial·USaka router manager, diskstation manager (dsm)
diskstation managerOn-premOS
Operating Systems / linux-distro
vs960hd firmwareEmbeddedFirmware
Hardware Firmware
skynas firmwareEmbeddedFirmware
Hardware Firmware / storage-nas
diskstation manager unified controllerOn-premOS
Operating Systems
Synology DiskStation Manager (DSM)On-premOS
Operating Systems / linux-distro

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.synology.com/security/advisory/Synology_SA_20_26
synology.com
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159
talosintelligence.com
News mentions
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