- Description
- Two path traversal vulnerabilities in the Network Installation Service (NIS) of Altium Enterprise Server allow an unauthenticated network attacker to write arbitrary files to any writable location on the server filesystem and to read package archive files from the server. No authentication, session, or credentials are required. Because content-controlled files can be written to web-accessible directories, or used to overwrite application binaries or configuration files, exploitation can be escalated to remote code execution in the context of the service account, and can disclose deployment package contents. Altium 365 cloud deployments are not affected, as the Network Installation Service is not part of the cloud offering.
- Source
- 4760f414-e1ae-4ff1-bdad-c7a9c3538b79
- NVD status
- Analyzed
- Products
- on-prem_enterprise_server
CVSS 4.0
- Type
- Secondary
- Base score
- 10
- Impact score
- -
- Exploitability score
- -
- Vector string
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- CRITICAL
CVSS 3.1
- Type
- Primary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
- 4760f414-e1ae-4ff1-bdad-c7a9c3538b79
- CWE-22
- Hype score
- Not currently trending
🚨 Critical - Multiple Vulnerabilities Disclosed in Altium Enterprise Server (CVE-2026-11429, CVE-2026-11423, CVE-2026-11419, CVE-2026-11420, CVE-2026-11414) A cascade of severe flaws has been disclosed affecting Altium Enterprise Server, including unauthenticated path travers
@UpwindMDR
6 Jun 2026
75 Impressions
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CVE-2026-11420 Path Traversal Vulnerabilities in Altium Enterprise Server Network Insta... https://t.co/qlGeXKhGuJ Vulnerability Notification: https://t.co/xhLrNnfyrO
@VulmonFeeds
6 Jun 2026
44 Impressions
0 Retweets
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