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CVE-2021-26562

Published: Feb 26, 2021Updated: Jan 14, 2025 Sources: CVE List NVDCWE-787
NVD MITRE
9.0CVSSCRITICAL
EPSS Score
1.7%
Top 25.6%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

Out-of-bounds write 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.

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-787

Affected Products

Synology DiskStation Manager (DSM)Synology
On-prem
Operating Systems / linux-distro
diskstation managersynology
On-premOS
Operating Systems / linux-distro
vs960hd firmwaresynology
EmbeddedFirmware
Hardware Firmware
skynas firmwaresynology
On-prem
Operating Systems / linux-distro
diskstation manager unified controllersynology
On-premOS
Operating Systems
synologycommercialUSOperating Systemsaka diskstation manager (dsm), router manager

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

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

Timeline

Published
Feb 26, 2021
Last Updated
Jan 14, 2025

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