Low severity · published Feb 5, 2026
CVE-2026-25815
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…
3.2
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack vector
Local
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiOS · Fortinet
through 7.6.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25815
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25815
docs.fortinet.com
https://docs.fortinet.com/document/fortimanager/7.6.6/administration-guide/30332/managing-fortigates-with-private-data-encryption
www.cert.at
https://www.cert.at/en/blog/2026/1/threat-actors-use-forticloud-to-collect-ldap-connection-passwords
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