What’s Vulnerable › Vulnerabilities

CVE-2019-17655

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-16 · updated 2026-06-17
• Weakness: CWE-312

Description

A cleartext storage in a file or on disk (CWE-313) vulnerability in FortiOS SSL VPN 6.2.0 through 6.2.2, 6.0.9 and earlier and FortiProxy 2.0.0, 1.2.9 and earlier may allow an attacker to retrieve a logged-in SSL VPN user's credentials should that attacker be able to read the session file stored on the targeted device's system.

Affected products

• Fortinet FortiOS (FortiGate): before 6.2.3 — fixed in 6.2.3

How to fix

Upgrade to a fixed version: Fortinet FortiOS (FortiGate) 6.2.3. Check the vendor advisory for mitigations.

References

• https://fortiguard.com/psirt/FG-IR-19-217
• https://fortiguard.com/psirt/FG-IR-20-224
• https://fortiguard.com/psirt/FG-IR-19-217
• https://fortiguard.com/psirt/FG-IR-20-224

Get alerted when CVE-2019-17655 or the next vulnerability affects your stack