Improper signature verification in Fortinet FortiSwitchManager
Priority CRITICAL 98Exploited in the wildCWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-347.
Summary
A improper verification of cryptographic signature vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.10, FortiProxy 7.2.0 through 7.2.14, FortiProxy 7.0.0 through 7.0.21, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message.
Why it matters now
Exploitation Active In CISA KEV since 2025-12-16CISA due date 2025-12-23
EPSS 0.68293 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Fortinet | FortiSwitchManager | 7.2.0 – 7.2.6; 7.0.0 – 7.0.5 | — | No fix listed | CNA |
| Fortinet | FortiOS | 7.6.0 – 7.6.3; 7.4.0 – 7.4.8; 7.2.0 – 7.2.11; 7.0.0 – 7.0.17 | — | No fix listed | CNA |
| Fortinet | FortiProxy | 7.6.0 – 7.6.3; 7.4.0 – 7.4.10; 7.2.0 – 7.2.14; 7.0.0 – 7.0.21 | — | No fix listed | CNA |
- FortiSwitchManager VendorFortinet Affected 7.2.0 – 7.2.6; 7.0.0 – 7.0.5 Fixed in — No fix listed CNA
- FortiOS VendorFortinet Affected 7.6.0 – 7.6.3; 7.4.0 – 7.4.8; 7.2.0 – 7.2.11; 7.0.0 – 7.0.17 Fixed in — No fix listed CNA
- FortiProxy VendorFortinet Affected 7.6.0 – 7.6.3; 7.4.0 – 7.4.10; 7.2.0 – 7.2.14; 7.0.0 – 7.0.21 Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* | 7.0.0 to before 7.0.22; 7.2.0 to before 7.2.15; 7.4.0 to before 7.4.11; 7.6.0 to before 7.6.4 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortiswitchmanager:*:*:*:*:*:*:*:* | 7.0.0 to before 7.0.6; 7.2.0 to before 7.2.7 | Vulnerable | Fortinet |
| cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* | 7.0.0 to before 7.0.18; 7.2.0 to before 7.2.12; 7.4.0 to before 7.4.9; 7.6.0 to before 7.6.4 | Vulnerable | Fortinet |
| cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_ape1808:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.22; 7.2.0 to before 7.2.15; 7.4.0 to before 7.4.11; 7.6.0 to before 7.6.4 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortiswitchmanager:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.6; 7.2.0 to before 7.2.7 Vulnerable ·Fortinet
- cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.18; 7.2.0 to before 7.2.12; 7.4.0 to before 7.4.9; 7.6.0 to before 7.6.4 Vulnerable ·Fortinet
- cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_ape1808:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
No fixed version listed by the sources yet.
Timeline
- 2025-12-16 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2025-59718
- 2026-10-03 Alias added: GHSA-fjj2-p33c-f8qq
References
More Fortinet Fortios vulnerabilities
- TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
- TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
- TI-2024-36904 Authentication bypass in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
- TI-2024-15234 A use of externally-controlled format string in Fortinet FortiOS versions 7.4.0 through… KEVCVSS 3.1CRITICAL 9.8
- TI-2024-14448 Out-of-bounds write in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
- TI-2023-12585 Heap-based buffer overflow in Fortinet FortiOS-6K7K KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-59718 · CVE Program
- CVE-2025-59718 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-fjj2-p33c-f8qq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences