CVE-2018-4009

Name: CVE-2018-4009
Creator: NVD / NIST
Published: 2019-04-15T20:29:00.517+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2018-4009 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An exploitable privilege escalation vulnerability exists in the Shimo VPN helper service due to improper validation of code signing. A user with local access can use this vulnerability to raise their privileges to root. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

An exploitable privilege escalation vulnerability exists in the Shimo VPN helper service due to improper validation of code signing. A user with local access can use this vulnerability to raise their privileges to root. An attacker would need local access to the machine to successfully exploit this bug.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.44%

35.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-494

Affected Software

Vendor	Product	Versions
Shimovpn	Shimo Vpn	4.1.5.1

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0678Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0678Exploit, Third Party Advisory

Timeline

Published: Apr 15, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-4009?

How severe is CVE-2018-4009?

CVE-2018-4009 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2018-4009?

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-2018-4009?

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

Scan your code now

Source: NVD / NIST