Vulnerability Database

313,825

Total vulnerabilities in the database

CVE-2021-26565

Cleartext transmission of sensitive information vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to obtain sensitive information via an HTTP session.

  • Published: Feb 26, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-26565
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 8.3
  • AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:P/I:N/A:N

CWEs:

OWASP TOP 10: