CVE-2025-27377 - CVE House
Back to Database
Status published Medium CVE-2025-27377

Missing Validation of Self-Signed Certificates in Altium Designer Allows Man-in-the-Middle Attacks

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-27377

Credits & Attribution

No credits recorded in the NVD database.

References

More from Altium

View All →
CVE-2025-27380
HTML Injection Leading to Script Execution in Altium Enterprise Server
High 7.6
CVE-2025-27379
Stored Cross-Site Scripting in AES BOM Viewer
Medium 6.8
CVE-2025-27378
SQL Injection in AES Due to Inactive SQL Parsing Configuration
High 8.6

Affected Vendor

Affected Software

Altium Designer
Vulnerable Versions:
24.9

Timeline

Official Publish: January 22nd, 2026
Last Modified: January 22nd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Weaknesses (CWE)

CWE-295

MITRE ATT&CK TTPs

T1557 Adversary-in-the-Middle
Credential Access
T1040 Network Sniffing
Collection
T1552 Unsecured Credentials
Credential Access
T1071 Application Layer Protocol
Command and Control
T1565 Data Manipulation
Impact