Heap-based buffer overflow in Fortinet FortiSwitchManager
Priority CRITICAL 100Exploited in the wildCWE-122Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
A heap-based buffer overflow 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, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets
Why it matters now
Exploitation Active In CISA KEV since 2026-09-09CISA due date 2026-09-12
EPSS 0.03742 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- No
- 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 | 7.2.2 – 7.2.5 | — | No fix listed | CNA |
| Fortinet | FortiOS | 7.6.0 – 7.6.2; 7.4.0 – 7.4.7; 7.2.4 – 7.2.11 | — | No fix listed | CNA |
- FortiSwitchManager VendorFortinet Affected 7.2.2 – 7.2.5 Fixed in — No fix listed CNA
- FortiOS VendorFortinet Affected 7.6.0 – 7.6.2; 7.4.0 – 7.4.7; 7.2.4 – 7.2.11 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* | 6.4.0 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:a:fortinet:fortiswitchmanager:*:*:*:*:*:*:*:* | 7.0.0 to before 7.0.6; 7.2.0 to before 7.2.7 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortisase:25.1.39:*:*:*:-:*:*:* | 25.1.39 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortisase:25.1.51:*:*:*:-:*:*:* | 25.1.51 | 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:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 6.4.0 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: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:a:fortinet:fortisase:25.1.39:*:*:*:-:*:*:* Versions 25.1.39 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortisase:25.1.51:*:*:*:-:*:*:* Versions 25.1.51 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
- 2026-09-09 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2025-25249
- 2026-10-03 Alias added: GHSA-mj8x-m8f5-x4w8
- 2026-10-07 CISA SSVC decision points changed
References
More Fortinet Fortios vulnerabilities
- TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
- 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
- TI-2022-20674 Out-of-bounds write in Fortinet FortiProxy KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-25249 · CVE Program
- CVE-2025-25249 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-mj8x-m8f5-x4w8 · 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