CVE-2018-9336

mediumpriority · track · 31EPSS 0.006 · 48 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.59% (48th) EPSS

CVSS 4.6 · medium

Is it mine?

7 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v3.07.8highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.07.1highCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-415USprimary

affected products (7)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
openvpn openvpn2.4.0 → 2.4.6nvdUScpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*
slackware slackware linux= 13.0nvdUScpe:2.3:o:slackware:slackware_linux:*:*:*:*:*:*:*:*
slackware slackware linux= 13.1nvdUScpe:2.3:o:slackware:slackware_linux:*:*:*:*:*:*:*:*
slackware slackware linux= 13.37nvdUScpe:2.3:o:slackware:slackware_linux:*:*:*:*:*:*:*:*
slackware slackware linux= 14.0nvdUScpe:2.3:o:slackware:slackware_linux:*:*:*:*:*:*:*:*
slackware slackware linux= 14.1nvdUScpe:2.3:o:slackware:slackware_linux:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2018-05-01modified 2026-06-17

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A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgr…
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A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6…

+1203 more

references (14)

External citations — patches, advisories, analysis.

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