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VulnerabilityPublished Updated

CVE-2026-11414: Altium Enterprise Server · Use of Hard-coded Credentials

Affects Altium Enterprise ServerSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 10.0 Critical : upgrade to 8.1.1 as a priority.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8.1.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade Altium Enterprise Server to 8.1.1.

Affected software

ProductAffectedFixed in
AltiumAltium Enterprise ServerAffected
  • <8.1.1
Fixed in
  • 8.1.1

AI-suggested

If you cannot patch yet, restrict network access to the Altium Enterprise Server Vault service to trusted users only and monitor for suspicious activity. Consider isolating the server to limit exposure. Altium 365 cloud deployments are not impacted due to architectural differences.

Description

A hard-coded cryptographic key is used by Altium Enterprise Server to sign file download URLs in the Vault service. Because the key is identical across all installations, an unauthenticated network attacker who can reach the server can forge valid download signatures and retrieve files from the Vault storage area without any authentication, session, or credentials. A separate path traversal vulnerability in the same download endpoint allows the configured storage root to be escaped, enabling reads of arbitrary files on the server filesystem. Combined, these issues allow an unauthenticated attacker to obtain sensitive server configuration and key material, which can lead to full server compromise. The vulnerability can be chained with CVE-2026-9152 to enumerate and bulk-download stored content. Altium 365 cloud deployments are not impacted in practice, as file storage uses object storage rather than the local filesystem.

References

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