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CVE-2026-25815 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.4 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CNA: [email protected]CVSS-B:3.2 LOWVector:CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://docs.fortinet.com/document/fortimanager/7.6.6/administration-guide/30332/managing-fortigates-with-private-data-encryption	[email protected]	Vendor
https://www.cert.at/en/blog/2026/1/threat-actors-use-forticloud-to-collect-ldap-connection-passwords	[email protected]	ExploitRemedyTechnical Analysis

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1394	Use of Default Cryptographic Key	[email protected]

Affected Products

Product	Versions
Fortinet FortiOS	<= 7.6.6 (semver)
CPE cpe:2.3:o:fortinet:fortios:::::::: Remediation Workaround:low effort Enable the "private-data-encryption" feature on the FortiGate.

Change History

3 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Feb 5, 2026	New CVE Received	[email protected]