What’s Vulnerable › Vulnerabilities

CVE-2023-38999

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-08-09 · updated 2026-06-17
• Weakness: CWE-352

Description

A Cross-Site Request Forgery (CSRF) in the System Halt API (/system/halt) of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to cause a Denial of Service (DoS) via a crafted GET request.

Affected products

• OPNsense: before 23.7 — fixed in 23.7

How to fix

Upgrade to a fixed version: OPNsense 23.7. Check the vendor advisory for mitigations.

References

• https://github.com/opnsense/core/commit/5d68f43d1f254144831881fc87d885eed120cf3c
• https://logicaltrust.net/blog/2023/08/opnsense.html
• https://github.com/opnsense/core/commit/5d68f43d1f254144831881fc87d885eed120cf3c
• https://logicaltrust.net/blog/2023/08/opnsense.html

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