Investigate in your agent.

Turn this advisory into a focused investigation. Ask your agent to check your project’s versions, explain the evidence, and suggest a compatible fix.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

Skip to content
cve.new Create a CVE report
Check your stack
CVE-2026-119409high8.6

OPNsense before 26.7.8 Root Command Injection via Firmware Mirror Setting

Impact

OPNsense before version 26.7.8 has a command injection vulnerability, allowing authenticated users with System: Firmware privilege to execute commands as root. Attackers can submit malicious input through the firmware mirror setting.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

opnsense · VulnCheck

core

2 ranges
VulnCheck version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 26.7.8

semver versions

unaffected

26.7.8

semver versions

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119409

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-78 ↗

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*

Before: 26.7.8

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "26.7.8"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-10-30

What changed

Follow changes
  1. CVE · CVE-2026-119409

    Observed 2026-10-30T17:19:42.404Z · upstream updated 2026-10-30T15:55:57.541Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-30T15:34:50.876282Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "total"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

References

8 sources
github.com/opnsense/core/security/advisories/GHSA-p683-f7x2-pm4p
vendor-advisoryVulnCheck
github.com/opnsense/core/commit/1cc41fc39da99d59818c789b3b561f1515126f47
patchVulnCheck
github.com/opnsense/core/commit/8e214533d33c3af7481e86f616ee615adc6a0a73
patchVulnCheck
github.com/opnsense/update/commit/9bfd3b7020499b6032ee64804193a9f3ce8178fa
patchVulnCheck
github.com/opnsense/update/blob/a2b8a10ba85f13b2cd002abb4c8692dde99f0261/src/update/opnsense-update.sh.in
technical-descriptionVulnCheck
abraxaslabs.tech/research/opnsense-firmware-mirror-sed
third-party-advisoryVulnCheck
View 2 more references
github.com/opnsense/core
productVulnCheck
www.vulncheck.com/advisories/opnsense-before-26.7.8-root-command-injection-via-firmware-mirror-setting
third-party-advisoryVulnCheck