What’s Vulnerable › Vulnerabilities

CVE-2025-40898: Path traversal in Import Arc data archive functionality in Guardian/CMC before 25.5.0

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-18 · updated 2026-06-17
• Weakness: CWE-22

Description

A path traversal vulnerability was discovered in the Import Arc data archive functionality due to insufficient validation of the input file. An authenticated user with limited privileges, by uploading a specifically-crafted Arc data archive, can potentially write arbitrary files in arbitrary paths, altering the device configuration and/or affecting its availability.

Affected products

• Nozomi Networks CMC: before 25.5.0 — fixed in 25.5.0
• Nozomi Networks Guardian: before 25.5.0 — fixed in 25.5.0

How to fix

Upgrade to a fixed version: Nozomi Networks CMC 25.5.0; Nozomi Networks Guardian 25.5.0. Check the vendor advisory for mitigations.

References

• https://security.nozominetworks.com/NN-2025:15-01
• https://cert-portal.siemens.com/productcert/html/ssa-827968.html

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