What is CVE-2025-54820?

CVE-2025-54820 is a high-severity vulnerability in Fortinet Fortimanager, classified under Stack-based Buffer Overflow. CVSS score: 7.0/10. Published 2026-03-10.

How severe is CVE-2025-54820?

High severity. CVSS v3 base score is 7.0 out of 10.

Buffer overflow in Fortinet Fortimanager

CVE-2025-54820

A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiManager 7.4.0 through 7.4.2, FortiManager 7.2.0 through 7.2.10, FortiManager 6.4 all versions may allow a remote unauthenticated attacker to execute unaut…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (19.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:R.

Affected products

Fortinet Fortimanager — versions 7.4.0, 7.2.0, 6.4.0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-098

Frequently asked questions

What is CVE-2025-54820?: CVE-2025-54820 is a high-severity vulnerability in Fortinet Fortimanager, classified under Stack-based Buffer Overflow. CVSS score: 7.0/10. Published 2026-03-10.
How severe is CVE-2025-54820?: High severity. CVSS v3 base score is 7.0 out of 10.