What is CVE-2025-48840?

CVE-2025-48840 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Authentication Bypass by Spoofing. CVSS score: 5.0/10. Published 2026-03-10.

How severe is CVE-2025-48840?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Vulnerability in Fortinet Fortiweb

CVE-2025-48840

An authentication bypass by spoofing vulnerability in Fortinet FortiWeb 7.6.0 through 7.6.3, FortiWeb 7.4.0 through 7.4.8, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow a remote unauthenticated attacker to bypass hostname…

EPSS: 0.001 (25.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:U/RC:C.

Affected products

Fortinet Fortiweb — versions 7.6.0, 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-097

Frequently asked questions

What is CVE-2025-48840?: CVE-2025-48840 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Authentication Bypass by Spoofing. CVSS score: 5.0/10. Published 2026-03-10.
How severe is CVE-2025-48840?: Medium severity. CVSS v3 base score is 5.0 out of 10.