CVE-2021-26561

CRITICAL

Synology DiskStation Manager < 6.2.3-25426-3 - Stack-Based Buffer Overflow via syno_finder_site HTTP Header

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159

Scores

CVSS v3 9.0
EPSS 0.0234
EPSS Percentile 85.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Details

CWE
CWE-119 CWE-121
Status published
Products (4)
synology/diskstation_manager < 6.2.3-25426-3
synology/diskstation_manager_unified_controller 3.0
synology/skynas_firmware
synology/vs960hd_firmware
Published Feb 26, 2021
Tracked Since Feb 18, 2026