VULNERABILITY INTELLIGENCE

CVE-2021-26569

CVSS score9.8 CRITICAL

EPSS probability2.25%

CISA KEVNot currently listed

Published2021-03-12

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Race Condition within a Thread vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests.

Weakness classification

security@synology.com: CWE-366
nvd@nist.gov: CWE-362

Primary references

security@synology.com — Vendor Advisory
security@synology.com — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry