How severe is CVE-2024-21762?

CVE-2024-21762 has a CVSS 3.1 base score of 9.6 (CRITICAL). EPSS estimates a 83.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2024-21762: Fortinet FortiOS Out-of-Bound Write

CISA Known Exploited Vulnerabilities

Fortinet FortiOS Out-of-Bound Write Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2024-02-09

Remediation due

2024-02-16

Ransomware

Known use

Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA notes
https://fortiguard.fortinet.com/psirt/FG-IR-24-015 ; https://nvd.nist.gov/vuln/detail/CVE-2024-21762

Description

A out-of-bounds write in Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7 allows attacker to execute unauthorized code or commands via specifically crafted requests

Severity

CVSS 3.1 · CNA9.6 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:W/RC:C

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Fortinet	FortiProxy	7.4.0 to 7.4.2 7.2.0 to 7.2.8 7.0.0 to 7.0.14 2.0.0 to 2.0.13 1.2.0 to 1.2.13 1.1.0 to 1.1.6 1.0.0 to 1.0.7
Fortinet	FortiOS	7.4.0 to 7.4.2 7.2.0 to 7.2.6 7.0.0 to 7.0.13 6.4.0 to 6.4.14 6.2.0 to 6.2.15 6.0.0 to 6.0.17

References

1 Links

Other references

https://fortiguard.com/psirt/FG-IR-24-015

Record Details

Published

2024-02-09

Last updated

2026-08-04

Assigner (CNA)

fortinet

Credited to

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Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-787 · Out-of-bounds Write

Fuzzing Binary Exploitation

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.