CVE-2025-54660

Saved VPN password disclosure via active debug code

Published Nov 18, 2025 · Updated Jan 14, 2026

Information disclosure in Fortinet FortiClient for Windows allows local users to retrieve saved VPN passwords through active debug code. Fortinet states that active debug code permits step-by-step execution of the application, but has not disclosed the specific debug feature or how it exposes stored credentials. Exploitation requires low-privileged local access to an endpoint with a saved VPN password, and affects confidentiality without reported data modification or service interruption.

CVSS severity4.9
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Fortinet FortiClient for Windows allows local users to retrieve saved VPN passwords through active debug code. Fortinet states that active debug code permits step-by-step execution of the application, but has not disclosed the specific debug feature or how it exposes stored credentials. Exploitation requires low-privileged local access to an endpoint with a saved VPN password, and affects confidentiality without reported data modification or service interruption.

The record

CVE
CVE-2025-54660
Published
Nov 18, 2025
Updated
Jan 14, 2026
Vendor
Fortinet
Product
FortiClient for Windows
Classifications
CWE-489, T1555
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0.0 <=7.0.14
  2. Affected versionversion=7.2.0 <=7.2.10
  3. Affected versionversion=7.4.0 <=7.4.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Fortinet · FortiClient for Windowsversion=7.0.0 <=7.0.14; version=7.2.0 <=7.2.10; version=7.4.0 <=7.4.3

Published CVSS scores

4.9FortinetCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-489Active Debug Code
T1555Credentials from Password Stores

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo