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CVE-2025-27377 Missing Validation of Self-Signed Certificates in Altium Designer Allows Man-in-the-Middle Attacks

🗓️ 22 Jan 2026 00:16:04Reported by AltiumType 
cvelist
 cvelist
🔗 www.cve.org👁 22 Views

Altium Designer 24.9.0 does not validate self-signed certificates in cloud connections, enabling man-in-the-middle attacks.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2025-27377
22 Jan 202600:16
attackerkb
Circl
CVE-2025-27377
22 Jan 202601:34
circl
CNNVD
Altium Designer security vulnerabilities
22 Jan 202600:00
cnnvd
CVE
CVE-2025-27377
22 Jan 202600:16
cve
EUVD
EUVD-2026-4175
22 Jan 202600:16
euvd
NVD
CVE-2025-27377
22 Jan 202601:15
nvd
Positive Technologies
PT-2026-3884
22 Jan 202600:00
ptsecurity
Vulnrichment
CVE-2025-27377 Missing Validation of Self-Signed Certificates in Altium Designer Allows Man-in-the-Middle Attacks
22 Jan 202600:16
vulnrichment
[
  {
    "defaultStatus": "unaffected",
    "modules": [
      "Cloud connections"
    ],
    "platforms": [
      "Web"
    ],
    "product": "Altium Designer",
    "vendor": "Altium",
    "versions": [
      {
        "changes": [
          {
            "at": "25.2",
            "status": "unaffected"
          }
        ],
        "lessThanOrEqual": "25.1",
        "status": "affected",
        "version": "24.9",
        "versionType": "semver"
      }
    ]
  }
]

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