How to check if you are exposed to CVE-2024-21762
- Find every Fortinet FortiOS system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2024-21762.
US federal agencies had to fix this by 2024-02-16. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Affected versions
Versions the National Vulnerability Database lists as vulnerable to CVE-2024-21762. Check the vendor advisory for the exact fixed builds before you sign anything off.
| Product | Vulnerable versions |
|---|---|
| Fortinet Fortios | from 6.0.0 before 6.0.18; from 6.2.0 before 6.2.16; from 6.4.0 before 6.4.15; from 7.0.0 before 7.0.14; from 7.2.0 before 7.2.7; from 7.4.0 before 7.4.3 |
| Fortinet Fortiproxy | from 1.0.0 before 2.0.14; from 7.0.0 before 7.0.15; from 7.2.0 before 7.2.9; from 7.4.0 before 7.4.3 |
Timeline
- · Published in the National Vulnerability Database
- · Added to CISA's Known Exploited Vulnerabilities catalog, the same day it was published
- · Fix-by date for US federal agencies, passed 989 days ago
Vendor advisories and fixes
Weakness type
More exploited Fortinet vulnerabilities
CISA lists 32 exploited Fortinet vulnerabilities. The closest matches:
- CVE-2025-68686Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor VulnerabilityAdded 2026-07-27
- CVE-2019-6693Fortinet FortiOS Use of Hard-Coded Credentials VulnerabilityAdded 2025-06-25
- CVE-2022-41328Fortinet FortiOS Path Traversal VulnerabilityAdded 2023-03-14
- CVE-2022-42475Fortinet FortiOS Heap-Based Buffer Overflow VulnerabilityAdded 2022-12-13
- CVE-2021-44168Fortinet FortiOS Arbitrary File DownloadAdded 2021-12-10
- CVE-2020-12812Fortinet FortiOS SSL VPN Improper Authentication VulnerabilityAdded 2021-11-03
- CVE-2019-5591Fortinet FortiOS Default Configuration VulnerabilityAdded 2021-11-03
- CVE-2018-13379Fortinet FortiOS SSL VPN Path Traversal VulnerabilityAdded 2021-11-03
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.