TI-2018-06756 Aliases CVE-2018-9336 GHSA-9p34-3252-9gh9

openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows…

LOW 35CWE-415Published 2018-05-01 · Updated 2024-08-05

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.00587 48th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPE	Versions	Role	Vendor
cpe:2.3:a:openvpn:openvpn::::::::	2.4.0 to before 2.4.6	Vulnerable	OpenVPN
cpe:2.3:o:slackware:slackware_linux:13.0:::::::*	13.0	Vulnerable	Slackware
cpe:2.3:o:slackware:slackware_linux:13.1:::::::*	13.1	Vulnerable	Slackware
cpe:2.3:o:slackware:slackware_linux:13.37:::::::*	13.37	Vulnerable	Slackware
cpe:2.3:o:slackware:slackware_linux:14.0:::::::*	14.0	Vulnerable	Slackware
cpe:2.3:o:slackware:slackware_linux:14.1:::::::*	14.1	Vulnerable	Slackware

cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* Versions 2.4.0 to before 2.4.6 Vulnerable ·OpenVPN
cpe:2.3:o:slackware:slackware_linux:13.0:*:*:*:*:*:*:* Versions 13.0 Vulnerable ·Slackware
cpe:2.3:o:slackware:slackware_linux:13.1:*:*:*:*:*:*:* Versions 13.1 Vulnerable ·Slackware
cpe:2.3:o:slackware:slackware_linux:13.37:*:*:*:*:*:*:* Versions 13.37 Vulnerable ·Slackware
cpe:2.3:o:slackware:slackware_linux:14.0:*:*:*:*:*:*:* Versions 14.0 Vulnerable ·Slackware
cpe:2.3:o:slackware:slackware_linux:14.1:*:*:*:*:*:*:* Versions 14.1 Vulnerable ·Slackware

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-9336
2026-10-03 Alias added: GHSA-9p34-3252-9gh9

References

Exploit 1

https://www.tenable.com/security/research/tra-2018-09

Patch 1

https://github.com/OpenVPN/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences