CVE-2026-119409: OPNsense before 26.7.8 contains a command injection vulnerability that allows authenticated users with the Sys

Routine

HIGH 7.2

CVE-2026-119409 is a high-severity flaw (CVSS 7.2) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-78
Published	2026-10-30
Last modified	2026-10-30

Publisher (CNA): VulnCheck

Last updated 2026-10-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-10-30 12:16 UTCPublished CVE record published
2026-10-30 12:16 UTCUpdated Record last modified

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-119409 | OPNsense up to 26.7.7 Firmware Update /api/core/firmware/set command injection 2026-10-30

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-119409?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-119409 being exploited?

CVE-2026-119409 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-119409 affect?

CVE-2026-119409 affects affected software. Severity is high (CVSS 7.2). 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 metacha

How urgent is CVE-2026-119409?

Priority 25/100. High severity

Software pages

pfSense and OPNsense vulnerabilities

References

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