CVE-2026-84194

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 74.1% of scored records. A rank, not a probability.

NVD base score

8.6 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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

NVD analysis status

Deferred. NVD last modified this record on 2026-09-08.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-01 11:33Z1 MO AGO

Last updated

2026-09-04 01:52Z1 MO AGO

Reserved

2026-09-01

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Weaknesses

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.2

Document digest

d2d6e3c3f6daa882eaef6641c7bd6afa0dcad2a395fdd0626d2d676bfe64ac62

• github.comGitHub Security Advisory (GHSA-wff2-9gjr-95f3)https://github.com/librenms/librenms/security/advisories/GHSA-wff2-9gjr-95f3vendor-advisory
• www.vulncheck.comVulnCheck Advisory: LibreNMS 23.10.0 before 26.4.0 OS Command Injection via Hostnamehttps://www.vulncheck.com/advisories/librenms-23.10.0-before-26.4.0-os-command-injection-via-hostnamethird-party-advisory