CVE-2025-40889Network attack vector

Authenticated file alteration via unvalidated paths

Published Oct 7, 2025 · Updated Oct 7, 2025

Path traversal in Nozomi Networks Guardian and CMC before 25.2.0 allows remote authenticated users to alter files through Time Machine. Time Machine fails to validate two path-related input parameters before using them to select paths under /data. Limited-privilege web-management access is sufficient to change the /data directory structure or contents or make its files unavailable.

CVSS severity7.2
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Nozomi Networks Guardian and CMC before 25.2.0 allows remote authenticated users to alter files through Time Machine. Time Machine fails to validate two path-related input parameters before using them to select paths under /data. Limited-privilege web-management access is sufficient to change the /data directory structure or contents or make its files unavailable.

The record

CVE
CVE-2025-40889
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
Nozomi Networks
Product
Guardian
Classifications
CWE-22, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <25.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nozomi Networks · Guardianversion=0 <25.2.0
Nozomi Networks · Central Management Console (CMC)version=0 <25.2.0

Published CVSS scores

8.1Nozomi NetworksCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.2Nozomi NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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