CVE-2018-9866

Name: CVE-2018-9866
Creator: NVD / NIST
Published: 2018-08-03T20:29:00.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.50%

Last modified Jun 17, 2026

CVE-2018-9866 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability in lack of validation of user-supplied parameters pass to XML-RPC calls on SonicWall Global Management System (GMS) virtual appliance's, allow remote user to execute arbitrary code. This vulnerability affected GMS version 8.1 and earlier.. EPSS estimates a 4.50% chance of exploitation in the next 30 days.

Description

A vulnerability in lack of validation of user-supplied parameters pass to XML-RPC calls on SonicWall Global Management System (GMS) virtual appliance's, allow remote user to execute arbitrary code. This vulnerability affected GMS version 8.1 and earlier.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

4.50%

90.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Sonicwall	Global Management System	<= 8.1

References

https://github.com/rapid7/metasploit-framework/pull/10305Exploit, Issue Tracking, Third Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0007Third Party Advisory
https://twitter.com/ddouhine/status/1019251292202586112Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/10305Exploit, Issue Tracking, Third Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0007Third Party Advisory
https://twitter.com/ddouhine/status/1019251292202586112Third Party Advisory

Timeline

Published: Aug 3, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-9866?

How severe is CVE-2018-9866?

CVE-2018-9866 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.50% probability of exploitation in the next 30 days.

How do I fix CVE-2018-9866?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-9866?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST