What is the CVSS score of CVE-2023-39008?

CVE-2023-39008 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.6%.

Is there a public PoC exploit available for CVE-2023-39008?

Yes, a public proof-of-concept exploit is available for CVE-2023-39008. Prioritise patching immediately. EPSS: 2.6%.

Is there a patch available for CVE-2023-39008?

Yes, a patch is available for CVE-2023-39008. Update the affected software to the latest version immediately.

Opnsense CVE-2023-39008

CRITICAL

Command Injection (CWE-77)

2023-08-09 cve@mitre.org

Command Injection Opnsense

9.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-77 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Command injection prevention MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	A remote attacker could inject arbitrary commands into system command execution by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

Patch available 2.6% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

A command injection vulnerability in the component /api/cron/settings/setJob/ of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to execute arbitrary system. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. A command injection vulnerability in the component /api/cron/settings/setJob/ of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allows attackers to execute arbitrary system commands. Affected products include: Opnsense. Version information: before 23.7.

Know when Opnsense gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Threat Intelligence Overview

EPSS Score

2.6%

Top 17% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC Yes

EPSS 2.6%

Patch available Yes

Active threat No

Deciding rule

CRITICAL severity + public POC available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +49

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

OS Command Injection CRITICAL

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Affected Products (CPE)NVD

cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*

More in Opnsense

View all

CVE-2023-39004 CRITICAL Act Now POC

9.8 Aug 09

Insecure permissions in the configuration directory (/conf/) of OPNsense Community Edition before 23.7 and Business Edit

CVE-2023-27152 CRITICAL Act Now POC

9.8 Oct 23

DECISO OPNsense 23.1 does not impose rate limits for authentication, allowing attackers to perform a brute-force attack

CVE-2023-39001 CRITICAL Act Now POC

9.8 Aug 09

A command injection vulnerability in the component diag_backup.php of OPNsense Community Edition before 23.7 and Busines

CVE-2023-39007 CRITICAL Act Now POC

9.6 Aug 09

/ui/cron/item/open in the Cron component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 al

CVE-2023-39003 HIGH This Week POC

7.5 Aug 09

OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 was discovered to contain insecure permissions

CVE-2023-39005 HIGH This Week POC

7.5 Aug 09

Insecure permissions exist for configd.socket in OPNsense Community Edition before 23.7 and Business Edition before 23.4

CVE-2023-38997 HIGH This Week POC

7.2 Aug 09

A directory traversal vulnerability in the Captive Portal templates of OPNsense Community Edition before 23.7 and Busine

CVE-2023-38999 MEDIUM This Month POC

6.5 Aug 09

A Cross-Site Request Forgery (CSRF) in the System Halt API (/system/halt) of OPNsense Community Edition before 23.7 and

CVE-2019-25373 MEDIUM This Month POC

6.4 Feb 15

OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicio

CVE-2019-25369 MEDIUM This Month POC

6.4 Feb 15

OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allow

CVE-2019-25372 MEDIUM This Month POC

6.1 Feb 15

OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject ma

CVE-2019-25371 MEDIUM This Month POC

6.1 Feb 15

OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject ma

Same weakness CWE-77 – Command Injection

View all

CVE-2024-21887 CRITICAL POC

9.1

CVE-2016-3081 HIGH POC

8.1

CVE-2012-1823 CRITICAL POC

9.8

CVE-2016-1555 CRITICAL POC

9.8

CVE-2024-55956 CRITICAL POC

9.8

CVE-2015-2051 HIGH POC

8.8

CVE-2017-6327 HIGH POC

8.8

CVE-2023-34960 CRITICAL POC

9.8

Same technique Command Injection

View all

CVE-2019-15107 CRITICAL POC

9.8

CVE-2024-51378 CRITICAL POC

9.8

CVE-2014-6271 CRITICAL POC

9.8

References

Advisories & patches

PATCH https://github.com/opnsense/core/commit/e800097d0c287bb665f0751a98a67c75ef7b45e5

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back