CVE-2026-90465

9.4 CRITICAL 0.2% exploit odds No fix listed Injection Network gear

What it is

A missing authentication vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to invoke privileged firewall management actions as root by sending a specially crafted request.

At a glance

Exploitability: Can be exploited from the same network segment without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-09-11 23:00 UTC ReservedThe CVE id was reserved by its CNA
2026-10-27 16:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-29 11:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-10-27 16:17 UTC
Last modified: 2026-10-29 11:17 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-77 · Command injection
Record status: Awaiting Analysis

Attack profile CVSS 4.0 · 9.4

Attack vector: Adjacent network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

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References

https://psirt.watchguard.com/CVE-2026-90465

NVD record · CVE.org record