CVE-2025-27377

MediumCVSS 5.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-295

Affected software

Vendor	Product	Versions
Altium	Altium Designer	>= 24.9, <= 25.1

References

https://www.altium.com/platform/security-compliance/security-advisoriesVendor Advisory

Timeline

Published: Jan 22, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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