CVE-2025-27377CWE-295
Missing Validation of Self-Signed Certificates in Altium Designer Allows Man-in-the-Middle Attacks
Medium · published January 22, 2026
What it is
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.
The record
Technical detail
- CVSS v3.1
- 5.3 · MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- CVSS v4.0
- Not supplied
- EPSS
- 0.00190 · 8.2th percentile
- Weakness
- CWE-295 · Improper Certificate Validation
- Published
- 2026-01-22T00:16Z
EPSS history
Timeline