Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1310 CNY

100%
Buy Us a Coffee

CVE-2026-11420— Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write and File Read

AI Predicted 9.8 Difficulty: Trivial EPSS 0.74% · P50

Affected Version Matrix 1

VendorProductVersion RangeStatus
AltiumAltium Enterprise Server< 8.1.1affected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-11420

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write and File Read
Source: NVD (National Vulnerability Database)
Vulnerability 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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Altium Enterprise Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Altium Enterprise Server是美国Altium公司的一款本地化数据管理服务器。 Altium Enterprise Server Network Installation Service存在安全漏洞，该漏洞源于路径遍历，导致未经身份验证的网络攻击者可写入任意文件并读取包存档文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
AltiumAltium Enterprise Server 0 ~ 8.1.1 -

II. Public POCs for CVE-2026-11420

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-11420

请登录查看更多情报信息。

Same Patch Batch · Altium · 2026-06-05 · 7 CVEs total

CVE-2026-11429Path Traversal in Altium Vault ScriptsController Allows Unauthenticated Remote Code Execut
CVE-2026-11431Path Traversal in Altium Projects Service Allows Arbitrary File Read
CVE-2026-11423Path Traversal in Altium Enterprise Server Collaboration Service Allows Privilege Escalati
CVE-2026-11414Unauthenticated File Exfiltration in Altium Enterprise Server Vault Service via Hard-coded
CVE-2026-11424Server-Side Request Forgery in Altium Platform Design GraphQL Service Allows Information D
CVE-2026-11419Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File Wr

IV. Related Vulnerabilities

Same product: Altium Enterprise Server
Same vendor: Altium
Same weakness: CWE-22

V. Comments for CVE-2026-11420

No comments yet

Leave a comment