Deserialization of untrusted data in Fortinet FortiNAC
Priority HIGH 70CWE-502Published · 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-502.
Summary
A deserialization of untrusted data in Fortinet FortiNAC below 7.2.1, below 9.4.3, below 9.2.8 and all earlier versions of 8.x allows attacker to execute unauthorized code or commands via specifically crafted request on inter-server communication port. Note FortiNAC versions 8.x will not be fixed.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.24296 97th 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
- 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 | FortiNAC | 9.4.0 – 9.4.2; 9.2.0 – 9.2.7; 9.1.0 – 9.1.9; 8.8.0 – 8.8.11; 8.7.0 – 8.7.6; 8.6.0 – 8.6.5; 8.5.0 – 8.5.4; 8.3.7; 7.2.0 – 7.2.1 | — | No fix listed | CNA |
- FortiNAC VendorFortinet Affected 9.4.0 – 9.4.2; 9.2.0 – 9.2.7; 9.1.0 – 9.1.9; 8.8.0 – 8.8.11; 8.7.0 – 8.7.6; 8.6.0 – 8.6.5; 8.5.0 – 8.5.4; 8.3.7; 7.2.0 – 7.2.1 Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:fortinac:*:*:*:*:*:*:*:* | 8.5.0 – 8.5.4; 8.6.0 – 8.6.5; 8.7.0 – 8.7.6; 8.8.0 – 8.8.11; 9.1.0 – 9.1.9; 9.2.0 – 9.2.7 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortinac:7.2.0:*:*:*:*:*:*:* | 7.2.0 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortinac:7.2.1:*:*:*:*:*:*:* | 7.2.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortinac:8.3.7:*:*:*:*:*:*:* | 8.3.7 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortinac:9.4.0:*:*:*:*:*:*:* | 9.4.0 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortinac:9.4.1:*:*:*:*:*:*:* | 9.4.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortinac:9.4.2:*:*:*:*:*:*:* | 9.4.2 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:fortinac:*:*:*:*:*:*:*:* Versions 8.5.0 – 8.5.4; 8.6.0 – 8.6.5; 8.7.0 – 8.7.6; 8.8.0 – 8.8.11; 9.1.0 – 9.1.9; 9.2.0 – 9.2.7 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortinac:7.2.0:*:*:*:*:*:*:* Versions 7.2.0 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortinac:7.2.1:*:*:*:*:*:*:* Versions 7.2.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortinac:8.3.7:*:*:*:*:*:*:* Versions 8.3.7 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortinac:9.4.0:*:*:*:*:*:*:* Versions 9.4.0 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortinac:9.4.1:*:*:*:*:*:*:* Versions 9.4.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortinac:9.4.2:*:*:*:*:*:*:* Versions 9.4.2 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-33299
- 2026-10-03 Alias added: GHSA-2j65-72jp-x2mj
References
More Fortinet Fortinac vulnerabilities
- TI-2022-18918 Exposure of resource to wrong sphere in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
- TI-2022-18002 Improper authorization in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
- TI-2022-18920 XML external entity injection in Fortinet FortiNAC CVSS 3.1CRITICAL 9.1
- TI-2024-20852 Cross-site scripting in Fortinet FortiNAC CVSS 3.1CRITICAL 9.0
- TI-2023-16459 Command injection in Fortinet FortiNAC CVSS 3.1MEDIUM 4.8
- TI-2023-08814 Cross-site scripting in Fortinet FortiNAC CVSS 3.1CRITICAL 9.0
Sources
- CVE-2023-33299 · CVE Program
- CVE-2023-33299 · NVD
- FIRST EPSS
- GHSA-2j65-72jp-x2mj · GitHub Advisory Database · CC BY 4.0
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