CVE-2026-45158
Last modified
CVE-2026-45158 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.53% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opnsense | Opnsense | < 26.1.8 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-45158?
How severe is CVE-2026-45158?
How do I fix CVE-2026-45158?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-45152uniget is a universal installer and updater for (container) …7.8
- CVE-2026-45153Nextcloud is an open source content collaboration platform. …4.6
- CVE-2026-45154Nextcloud is an open source content collaboration platform. …2.6
- CVE-2026-45155Nextcloud is an open source content collaboration platform. …2.6
- CVE-2026-45156Nextcloud is an open source content collaboration platform. …8.1
- CVE-2026-45157Nextcloud is an open source content collaboration platform. …6.3
- CVE-2026-45159Nextcloud is an open source content collaboration platform. …3.5
- CVE-2026-4516A vulnerability was found in Foundation Agents MetaGPT up to…6.3
- CVE-2026-45160ESF-IDF is the Espressif Internet of Things (IOT) Developmen…6.5
- CVE-2026-45162Pimcore is an Open Source Data & Experience Management Platf…8
- CVE-2026-45169Idira Privileged Access Manager (PAM) Self-Hosted Vault vers…8.6
- CVE-2026-45170Idira Vendor PAM - Self-Hosted Connector versions prior 1.1.…8.8
Are you affected by CVE-2026-45158?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST