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CVE-2023-38999

MEDIUM
6.5
CVSS Score
Published: August 9, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 06:11 AM UTC
1 product affected across 1 vendorOpnsense

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Opnsense· Opnsense
95%
v < 23.7
Affected range stops below 23.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Patch
Source: [email protected]
https://github.com/opnsense/core/commit/5d68f43d1f254144831881fc87d885eed120cf3c
ExploitThird Party Advisory
Source: [email protected]
https://logicaltrust.net/blog/2023/08/opnsense.html

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-352

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