NN-2025:9-01
Path traversal in Time Machine functionality in Guardian/CMC before 25.2.0
Last update: 2025-10-07
| Advisory ID | NN-2025:9-01 |
|---|---|
| Topic | Path traversal in Time Machine functionality in Guardian/CMC before 25.2.0 |
| CWE Impact | CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') |
| Issue date | 2025-10-07 |
| Affects | Guardian, CMC < v25.2.0 |
| CVE Name(s) | CVE-2025-40889 |
| CVSS Details | 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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| CVSS Score | 7.2 (CVSS v4.0) 8.1 (CVSS v3.1) |
| CVE Risk Level | High (CVSS v4.0) High (CVSS v3.1) |
| Risk Level for Nozomi customers | Medium |
Summary
A path traversal vulnerability was discovered in the Time Machine functionality due to missing validation of two input parameters.
Impact
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.
Affected Products
Guardian, CMC < v25.2.0
Workarounds and Mitigations
Use internal firewall features to limit access to the web management interface. Review all accounts with access to it and delete unnecessary ones.
Solutions
Upgrade to v25.2.0 or later.
Modification History
2025-10-07: Initial revision
Related Links
Acknowledgements
We thank the following parties for their efforts:
- Andrea Palanca of Nozomi Networks Product Security team for finding this issue during an internal investigation
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.