Altium Designer version 24.9.0 does not validate self-signed server certificates for cloud connections. An attacker capable of performing a man-in-the-middle (MITM) attack could exploit this issue to intercept or manipulate network traffic, potentially exposing authentication credentials or sensitive design data.
History

Fri, 23 Jan 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Altium
Altium designer
Vendors & Products Altium
Altium designer

Thu, 22 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 22 Jan 2026 00:45:00 +0000

Type Values Removed Values Added
Description Altium Designer version 24.9.0 does not validate self-signed server certificates for cloud connections. An attacker capable of performing a man-in-the-middle (MITM) attack could exploit this issue to intercept or manipulate network traffic, potentially exposing authentication credentials or sensitive design data.
Title Missing Validation of Self-Signed Certificates in Altium Designer Allows Man-in-the-Middle Attacks
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Altium

Published: 2026-01-22T00:16:04.634Z

Updated: 2026-01-22T14:41:16.446Z

Reserved: 2025-02-23T21:02:12.105Z

Link: CVE-2025-27377

cve-icon Vulnrichment

Updated: 2026-01-22T14:41:13.110Z

cve-icon NVD

Status : Received

Published: 2026-01-22T01:15:50.510

Modified: 2026-01-22T01:15:50.510

Link: CVE-2025-27377

cve-icon Redhat

No data.