CVE-2023-46850

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2023-46850
StatePUBLISHED
AssignerOpenVPN
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-11-11 01:15:07 UTC
Updated2026-06-23 22:16:30 UTC
DescriptionUse after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

EPSS: 0.019820000 probability, percentile 0.779770000 (date 2026-06-23)

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 12.0 All All All
Operating System Fedoraproject Fedora 39 All All All
Application Openvpn Openvpn All All All All
Application Openvpn Openvpn Access Server All All All All
Application Openvpn Openvpn Access Server All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenVPN OpenVPN 2 Community affected 2.6.0 2.6.6 minor release Not specified
CNA OpenVPN Access Server affected 2.11.0 2.11.3 patch release Linux
CNA OpenVPN Access Server affected 2.12.0 2.12.2 patch release Linux

References

ReferenceSourceLinkTags
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List
Access Server Security Update (CVE-2023-46849, CVE-2023-46850) | OpenVPN af854a3a-2127-422b-91ae-364da2661108 openvpn.net Vendor Advisory
Just a moment... af854a3a-2127-422b-91ae-364da2661108 community.openvpn.net Vendor Advisory
www.debian.org/security/2023/dsa-5555 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 199892 Ubuntu Security Notification for Open Virtual Private Network (OpenVPN) Vulnerabilities (USN-6484-1)
  • 284773 Fedora Security Update for Open Virtual Private Network (OpenVPN) (FEDORA-2023-e4df33666c)
  • 285135 Fedora Security Update for Open Virtual Private Network (OpenVPN) (FEDORA-2023-d9d55a0bfc)
  • 503553 Alpine Linux Security Update for Open Virtual Private Network (OpenVPN)
  • 505913 Alpine Linux Security Update for openvpn
  • 6000327 Debian Security Update for Open Virtual Private Network (OpenVPN) (DSA 5555-1)
  • 691358 Free Berkeley Software Distribution (FreeBSD) Security Update for Open Virtual Private Network (OpenVPN) (2fe004f5-83fd-11ee-9f5d-31909fb2f495)
  • 92096 Open Virtual Private Network (OpenVPN) Community Edition Multiple Security Vulnerabilities
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report