CVE-2025-27377
Missing Validation of Self-Signed Certificates in Altium Designer Allows Man-in-the-Middle Attacks
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jan 22, 2026
- Updated
- Jan 22, 2026
- Reserved
- Feb 23, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N | Altium |
Weaknesses
- CWE-295 – Improper Certificate Validation
Affected Products
| Product | Versions |
|---|---|
Altium DesignerAltium |
|
References
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