CVE•Published 2026-05-13•Modified 2026-05-15•1 article on news•5 live references•NVD data
CVE-2026-45158Opnsense · Opnsense
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP configuration of the configured interface, which is processed by a shell script, allowing remote code execution as root on the underlying operating system. This vulnerability is fixed in 26.1.8.
Timeline
Published 2026-05-13
Modified 2026-05-15
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-2026-45158Hosts 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-2026-45158Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-45158Censys host search filtered to this CVE id.
grep.app
CVE-2026-45158Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-45158GitHub code search for direct mentions.
Google dork
"CVE-2026-45158" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-45158 on GitHub.