CVE-2026-66154 — HIGH (8.3)

Vulnerability Description

An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes.

CVSS Score

8.3

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-295

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0011

FAQ

What is CVE-2026-66154?

CVE-2026-66154 is a vulnerability with a CVSS score of 8.3 (HIGH). An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack an...

How severe is CVE-2026-66154?

CVE-2026-66154 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66154?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.