CVE record · CVE-2025-59718

Improper signature verification in Fortinet FortiSwitchManager and others

CVSS 9.1 CriticalCriticalIn CISA KEVEPSS 0.68 · 99th percentile

Critical, because:

In CISA’s KEV catalogue since 16 Dec 2025: it is known to be exploited.
CVSS score 9.1: 9.0 or more.
CVSS score 9.1 (7.0 or more) and EPSS 0.68 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

Published by the CVE Program (CNA: fortinet) at 9 Dec 2025, 17:20 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Fortinet	FortiSwitchManager	affected 7.2.0 to 7.2.6, inclusive semver affected 7.0.0 to 7.0.5, inclusive semver Other versions: unaffected
Fortinet	FortiOS	affected 7.6.0 to 7.6.3, inclusive semver affected 7.4.0 to 7.4.8, inclusive semver affected 7.2.0 to 7.2.11, inclusive semver affected 7.0.0 to 7.0.17, inclusive semver Other versions: unaffected
Fortinet	FortiProxy	affected 7.6.0 to 7.6.3, inclusive semver affected 7.4.0 to 7.4.10, inclusive semver affected 7.2.0 to 7.2.14, inclusive semver affected 7.0.0 to 7.0.21, inclusive semver Other versions: unaffected

Identifiers: CVE-2025-59718
CNA: fortinet
Weakness (CWE): CWE-347
Tags: Fortinet FortiSwitchManager
Fortinet FortiOS
Fortinet FortiProxy
Weak cryptography or TLS
Published: 9 Dec 2025
Updated: 15 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.1	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C	CNA (fortinet)

CISA KEV Listed since 16 Dec 2025: known to be exploited.
EPSS 0.68, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 9 Dec 2025. New records show when each source confirmed them.

Sources

References from the CNA

fortiguard.fortinet.com/psirt/FG-IR-25-647

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.