Vulnerability Description
Fortinet FortiOS through 7.6.6 allows attackers to decrypt LDAP credentials stored in device configuration files, as exploited in the wild from 2025-12-16 through 2026 (by default, the encryption key is the same across all customers' installations). NOTE: the Supplier's position is that the instance of CWE-1394 is not a vulnerability because customers "are supposed to enable" a non-default option that eliminates the weakness. However, that non-default option can disrupt functionality as shown in the "Managing FortiGates with private data encryption" document, and is therefore intentionally not a default option.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://docs.fortinet.com/document/fortimanager/7.6.6/administration-guide/30332
- https://www.cert.at/en/blog/2026/1/threat-actors-use-forticloud-to-collect-ldap-
FAQ
What is CVE-2026-25815?
CVE-2026-25815 is a vulnerability with a CVSS score of 3.2 (LOW). Fortinet FortiOS through 7.6.6 allows attackers to decrypt LDAP credentials stored in device configuration files, as exploited in the wild from 2025-12-16 through 2026 (by default, the encryption key ...
How severe is CVE-2026-25815?
CVE-2026-25815 has been rated LOW with a CVSS base score of 3.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25815?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.