CVE-2025-47855
FortiFone 7.0 – versions 7.0.0 to 7.0.1 FortiFone 3.0 – versions 3.0.13 to 3.0.23 FortiOS 7.6 – versions 7.6.0 to 7.6.3 FortiOS 7.4 – versions 7.4.0 to 7.4.8 FortiOS 7.2 – versions 7.2.0 to 7.2.11 FortiOS 7.0 – versions 7.0.0 to 7.0.17 FortiOS 6.4 – versions 6.4.0 to 6.4.16 FortiSASE 25.2 – version 25.2.b FortiSASE 25.1.a – version 25.1.a.2 FortiSIEM 7.4 – version 7.4.0 FortiSIEM 7.3 – versions 7.3.0 to 7.3.4 FortiSIEM 7.2 – versions 7.2.0 to 7.2.6 FortiSIEM 7.1 – versions 7.1.0 to 7.1.8 FortiSIEM 7.0 – versions 7.0.0 to 7.0.4 FortiSIEM 6.7 – versions 6.7.0 to 6.7.10 FortiSwitchManager 7.2 – versions 7.2.0 to 7.2.6 FortiSwitchManager 7.0 – versions 7.0.0 to 7.0.5 Update 1 On September 9, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2025-25249 to their Known Exploited Vulnerabilities (KEV) Database. The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.
EPSS 0.93% · 59.2th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| FortiOS | FortiOS 7.6 – versions 7.6.0 to 7.6.3 | |
| FortiSIEM | FortiSIEM 7.3 – versions 7.3.0 to 7.3.4 | |
| FortiSIEM | FortiSIEM 7.1 – versions 7.1.0 to 7.1.8 | |
| FortiSIEM | FortiSIEM 7.0 – versions 7.0.0 to 7.0.4 | |
| FortiOS | FortiOS 7.4 – versions 7.4.0 to 7.4.8 | |
| FortiSwitchManager | FortiSwitchManager 7.0 – versions 7.0.0 to 7.0.5 | |
| FortiSIEM | FortiSIEM 7.2 – versions 7.2.0 to 7.2.6 | |
| FortiSASE | FortiSASE 25.1.a – version 25.1.a.2 | |
| FortiOS | FortiOS 6.4 – versions 6.4.0 to 6.4.16 | |
| FortiFone | FortiFone 7.0 – versions 7.0.0 to 7.0.1 | |
| FortiOS | FortiOS 7.2 – versions 7.2.0 to 7.2.11 | |
| FortiSIEM | FortiSIEM 6.7 – versions 6.7.0 to 6.7.10 | |
| FortiSIEM | FortiSIEM 7.4 – version 7.4.0 | |
| FortiOS | FortiOS 7.0 – versions 7.0.0 to 7.0.17 | |
| FortiSASE | FortiSASE 25.2 – version 25.2.b | |
| FortiSwitchManager | FortiSwitchManager 7.2 – versions 7.2.0 to 7.2.6 | |
| FortiFone | FortiFone 3.0 – versions 3.0.13 to 3.0.23 |
Timeline
- Jan 13, 2026 CVE Published
- Jan 13, 2026 PoC Published
- Jan 13, 2026 PoC Published
- Jan 13, 2026 PoC Published
- Jan 13, 2026 PoC Published
- Jan 14, 2026 EPSS Score
- Jan 18, 2026 EPSS Score
- Jan 18, 2026 PoC Published
- Jan 21, 2026 EPSS Score
- Jan 25, 2026 EPSS Score
- Jan 28, 2026 EPSS Score
- Feb 1, 2026 EPSS Score
References
- https://cyber.gc.ca/en/alerts-advisories/fortinet-security-advisory-av26-023 advisory
- https://www.fortiguard.com/psirt/FG-IR-25-084 vendor
- https://www.fortiguard.com/psirt/FG-IR-25-260 vendor
- https://www.fortiguard.com/psirt/FG-IR-25-772 vendor
- https://www.fortiguard.com/psirt?filter=1&version=&severity=5&severity=4&severity=3&severity=2 vendor
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-25249 advisory