Is CVE-2018-9336 in the CISA KEV catalog?

No. CVE-2018-9336 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-9336?

CVE-2018-9336 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2018-9336?

CVE-2018-9336 has an EPSS score of 0.61% (45th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-9336?

Upgrade OpenVPN to 2.4.6 or later.

CVE & CISA-KEV Catalog

CVE-2018-9336

HIGH

7.8

CVSS v3

NVD

Description

openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.

CWE-415

How to fix

Remediation Available

OpenVPNWindows application

Affected:2.4.0 2.4.6Fixed in:2.4.6OpenVPN, Inc.

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.61%probability of exploitation in 30 days

45thpercentile

Moderate risk: more likely to be exploited than 45% of all known CVEs.

References

Patch1

github.com

Exploit1

tenable.com

Vendor Advisory1

community.openvpn.net

Third-Party Advisory2

Related Vulnerabilities

Other CWE-415 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-25136	Medium	6.5	90%	-	Fix
CVE-2018-0101	Critical	10.0	87%	-	Fix
CVE-2003-0545	Critical	9.8	85%	-	Fix
CVE-2019-3829	Medium	5.3	59%	-	Fix
CVE-2026-33824	Critical	9.8	56%	-	Fix
CVE-2021-3407	Medium	5.5	50%	-	Fix

Embed a live status badge for CVE-2018-9336

Markdown

[![CVE-2018-9336](https://tridentstack.com/cve/badge/CVE-2018-9336.svg)](https://tridentstack.com/cve/CVE-2018-9336)

HTML

<a href="https://tridentstack.com/cve/CVE-2018-9336"><img src="https://tridentstack.com/cve/badge/CVE-2018-9336.svg" alt="CVE-2018-9336"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.