CVE•Published 2023-08-09•Modified 2026-07-09•1 article on news•6 live references•NVD data
CVE-2023-39004Opnsense · Opnsense
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
53
Exploit Prediction Scoring System · top 47% of all CVEs
Weaknesses (CWE)
Description
Insecure permissions in the configuration directory (/conf/) of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 allow attackers to access sensitive information (e.g., hashed root password) which could lead to privilege escalation.
Timeline
Published 2023-08-09
Modified 2026-07-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2023-39004Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Opnsense Opnsense"All exposed Opnsense Opnsense instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Opnsense"HTTP body or banner mentions "Opnsense" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2023-39004Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2023-39004Censys host search filtered to this CVE id.
grep.app
CVE-2023-39004Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2023-39004GitHub code search for direct mentions.
Google dork
"CVE-2023-39004" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2023-39004 on GitHub.