CVE-2018-9336: n/a vulnerability

CVE-2018-9336: openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 07:17 UTC (UTC+00:00)

Security readout for executives and security teams

This is a local OpenVPN Windows service issue in OpenVPN 2.4.x before 2.4.6. A local attacker could send a malformed request to the interactive service helper and crash or corrupt memory. The public record says privilege escalation may be possible, but the exact higher-impact path is unspecified. Exposure is most relevant to systems running OpenVPN 2.4.x before 2.4.6 with the interactive service helper present. The attack is local, so risk is higher on shared endpoints, jump hosts, or systems where untrusted users can log in. Treat this as a scheduled security update, not an emergency, unless affected systems allow untrusted local users. The business concern is local disruption of VPN service and a partly unspecified privilege-escalation possibility. Mitigation focus: Upgrade OpenVPN 2.4.x installations to 2.4.6 or later.; Apply vendor operating-system packages where OpenVPN is distro-managed.; Prioritize shared systems with local untrusted users first..

Prepared: Jun 7, 2026, 13:40 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup

cve · low confidence lookup

CVE-2018-9336 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 1, 2018, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://github.com/OpenVPN/openvpn/releases/tag/v2.4.6CVE reference · x_refsource_CONFIRM
https://www.tenable.com/security/research/tra-2018-09CVE reference · x_refsource_MISC
https://github.com/OpenVPN/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79bCVE reference · x_refsource_CONFIRM
https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.