OPNsense 26.7.8 前版本韌體映象設定漏洞 CVE-2026-119409：可造成根命令注入

OPNsense before 26.7.8 contains a command injection vulnerability that allows authenticated users with the System: Firmware privilege to execute commands as root by storing a malicious firmware mirror URL. Attackers can submit shell metacharacters through POST /api/core/firmware/set that opnsense-update evaluates with eval, and can also disable package signature verification through sed injection.

Impact

Affected Products

The following products are affected by CVE-2026-119409 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Update OPNsense to version 26.7.8 or later to fix command injection flaws.

• Update OPNsense to version 26.7.8 or later.
• Apply necessary patches promptly.
• Review system logs for suspicious activity.
• Restrict administrative privileges.

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-119409.

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-119409 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-119409 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-119409 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-119409 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

• New CVE Received by [email protected]

  十月. 30, 2026

  Action	Type	Old Value	New Value
  Added	Description		OPNsense before 26.7.8 contains a command injection vulnerability that allows authenticated users with the System: Firmware privilege to execute commands as root by storing a malicious firmware mirror URL. Attackers can submit shell metacharacters through POST /api/core/firmware/set that opnsense-update evaluates with eval, and can also disable package signature verification through sed injection.
  Added	CVSS V4.0		AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  Added	CVSS V3.1		AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  Added	CWE		CWE-78
  Added	Affected		New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/119xxx/CVE-2026-119409.json">CVE-2026-119409</a>
  Added	Reference		https://abraxaslabs.tech/research/opnsense-firmware-mirror-sed
  Added	Reference		https://github.com/opnsense/core
  Added	Reference		https://github.com/opnsense/core/commit/1cc41fc39da99d59818c789b3b561f1515126f47
  Added	Reference		https://github.com/opnsense/core/commit/8e214533d33c3af7481e86f616ee615adc6a0a73
  Added	Reference		https://github.com/opnsense/core/security/advisories/GHSA-p683-f7x2-pm4p
  Added	Reference		https://github.com/opnsense/update/blob/a2b8a10ba85f13b2cd002abb4c8692dde99f0261/src/update/opnsense-update.sh.in#L165
  Added	Reference		https://github.com/opnsense/update/commit/9bfd3b7020499b6032ee64804193a9f3ce8178fa
  Added	Reference		https://www.vulncheck.com/advisories/opnsense-before-26.7.8-root-command-injection-via-firmware-mirror-setting

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.