CVE-2026-45158— OPNsense: Command Injection via Attacker-Controlled DHCP Config
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I. Basic Information for CVE-2026-45158
Vulnerability Information
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Vulnerability Title
OPNsense: Command Injection via Attacker-Controlled DHCP Config
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
参数注入或修改
Source: NVD (National Vulnerability Database)
Vulnerability Title
Deciso OPNsense 参数注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Deciso OPNsense是荷兰Deciso公司的一套基于FreeBSD的开源防火墙和路由软件。 Deciso OPNsense 26.1.8之前版本存在参数注入漏洞，该漏洞源于未清理的用户输入被传递到DHCP配置中，并由shell脚本处理，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-45158
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- https://github.com/opnsense/core/security/advisories/GHSA-5rx3-w735-74wmx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-45158
Same Patch Batch · opnsense · 2026-05-13 · 4 CVEs total
| CVE-2026-44193 | 9.1 CRITICAL | OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_config_section` method |
| CVE-2026-44194 | 9.1 CRITICAL | OPNsense: RCE on user managment |
| CVE-2026-44195 | 5.3 MEDIUM | OPNsense: Authentication lockout bypass |
IV. Related Vulnerabilities
Same product: core
- CVE-2026-44194
OPNsense: RCE on user managment - CVE-2026-44195
OPNsense: Authentication lockout bypass - CVE-2026-44193
OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_co - CVE-2026-42552
Flight: Sensitive information disclosure via default error h - CVE-2026-42551
Flight: HTTP method override enabled by default enables CSRF
Same vendor: opnsense
- CVE-2026-44194
OPNsense: RCE on user managment - CVE-2026-44195
OPNsense: Authentication lockout bypass - CVE-2026-44193
OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_co - CVE-2026-34578
OPNsense has an LDAP Injection via Unsanitized Username in A - CVE-2026-30868
Cross-Site Request Forgery (CSRF) in opnsense/core
Same weakness: CWE-88
V. Comments for CVE-2026-45158
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