CVE-2023-40721
MEDIUMCVSS 6.7/10EPSS 0.23%
Last modified
CVE-2023-40721 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A use of externally-controlled format string vulnerability [CWE-134] vulnerability in Fortinet allows a privileged attacker to execute arbitrary code or commands via specially crafted requests.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
Description
A use of externally-controlled format string vulnerability [CWE-134] vulnerability in Fortinet allows a privileged attacker to execute arbitrary code or commands via specially crafted requests.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Fortios | >= 6.2.0, < 7.0.14 |
| Fortinet | Fortios | >= 7.2.0, < 7.2.7 |
| Fortinet | Fortios | 7.4.0 |
| Fortinet | Fortiswitchmanager | >= 7.0.0, < 7.0.3 |
| Fortinet | Fortiswitchmanager | >= 7.2.0, < 7.2.3 |
| Fortinet | Fortiproxy | >= 1.2.0, < 7.0.15 |
| Fortinet | Fortiproxy | >= 7.2.0, < 7.2.8 |
| Fortinet | Fortiproxy | 7.4.0 |
| Fortinet | Fortipam | >= 1.0.0, < 1.2.0 |
References
- https://fortiguard.com/psirt/FG-IR-23-261Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-40721?
A use of externally-controlled format string vulnerability [CWE-134] vulnerability in Fortinet allows a privileged attacker to execute arbitrary code or commands via specially crafted requests.
How severe is CVE-2023-40721?
CVE-2023-40721 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2023-40721?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2023-40721?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST