Memory corruption in Fortinet FortiOS and FortiProxy
Priority MEDIUM 42CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
A buffer overflow vulnerability in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.7, 5.4 and earlier versions and FortiProxy 2.0.0, 1.2.8 and earlier versions under SSL VPN web portal allows a non-authenticated attacker to perform a Denial-of-service attack via special craft message payloads.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01753 78th 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
- None
- Automatable
- Yes
- Technical impact
- Partial
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 | Fortinet FortiOS and FortiProxy | FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.7, 5.4 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier. | — | No fix listed | CNA |
- Fortinet FortiOS and FortiProxy VendorFortinet Affected FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.7, 5.4 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier. Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* | up to 1.2.8 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortiproxy:2.0.0:*:*:*:*:*:*:* | 2.0.0 | Vulnerable | Fortinet |
| cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* | up to 5.2.14; 5.4.0 – 5.4.12; 5.6.0 – 5.6.10; 6.0.0 – 6.0.4 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions up to 1.2.8 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortiproxy:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·Fortinet
- cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions up to 5.2.14; 5.4.0 – 5.4.12; 5.6.0 – 5.6.10; 6.0.0 – 6.0.4 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-13381
- 2026-10-03 Alias added: GHSA-rmh4-cjjf-7237
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-2018-13381 · CVE Program
- CVE-2018-13381 · NVD
- FIRST EPSS
- GHSA-rmh4-cjjf-7237 · 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