Fortinet Critical Vulnerability - 20260119001¶
Overview¶
Fortinet has released a critical security update for their FortiOS and FortiSwitchManager products. This vulnerability allows a remote, unauthenticated attacker to execute arbitrary code or commands via specially crafted requests.
Since the initial publication of this advisory, CISA has added the vulnerability to its Known Exploited Vulnerabilities (KEV) catalogue based on evidence of active exploitation in the wild.
What is vulnerable?¶
| Product(s) Affected | Version(s) | CVE | CVSS | Severity |
|---|---|---|---|---|
| FortiOS FortiSwitchManager |
Vendor listed affected versions | CVE-2025-25249 | 9.8 | Critical |
What has been observed?¶
The WA SOC has not received any reports of exploitation of this vulnerability on Western Australian Government networks at the time of writing.
Recommendation¶
The WA SOC recommends administrators apply the solutions as per vendor instructions to all affected devices within expected timeframes (refer Patch Management):
- FortiGuard Labs: https://fortiguard.fortinet.com/psirt/FG-IR-25-084
Changelog¶
- 2026-01-19: Initial publication.
- 2026-09-17: Added content relating to claims of active exploitation of CVE-2025-25249.