Buffer overflow in Fortinet Fortios

CVE-2024-21762

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…

Vulnerability class: Buffer Overflow

EPSS: 0.925 (99.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: 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.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-21762?
CVE-2024-21762 is a critical-severity vulnerability in Fortinet Fortios, classified under Out-of-bounds Write. CVSS score: 9.6/10. Published 2024-02-09.
How severe is CVE-2024-21762?
Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2024-21762 known to be exploited?
Yes. CVE-2024-21762 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-02-09), indicating it is being actively exploited. 81 public proof-of-concept repositories are indexed.