CVE-2025-40889 PUBLISHED

Path traversal in Time Machine functionality in Guardian/CMC before 25.2.0

Assigner: Nozomi
Reserved: 16.04.2025 Published: 07.10.2025 Updated: 07.10.2025

A path traversal vulnerability was discovered in the Time Machine functionality due to missing validation of two input parameters. An authenticated user with limited privileges, by issuing a specifically-crafted request, can potentially alter the structure and content of files in the /data folder, and/or affect their availability.

CVSS Vector: CVSS: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 Score: 7.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS Score: 8.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Nozomi Networks
Product	Guardian
Versions	Default: unaffected affected from 0 to 25.2.0 (excl.)

Vendor	Nozomi Networks
Product	CMC
Versions	Default: unaffected affected from 0 to 25.2.0 (excl.)

Workarounds

Review all accounts with access to it and delete unnecessary ones.

Solutions

Upgrade to v25.2.0 or later.

Credits

This issue was found by Andrea Palanca of Nozomi Networks Product Security team during an internal investigation. finder

References

https://security.nozominetworks.com/NN-2025:9-01

Problem Types

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE

Impacts

CAPEC-139 Relative Path Traversal