CVE-2023-46850

Use 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.

Published: Nov 11, 2023Updated: Jun 23, 2026 Sources: CVE List NVD BDU csafCWE-416

9.8CRITICAL

Description

SINEMA Remote Connect Client before V3.2 SP2 is affected by multiple vulnerabilities. Siemens has released a new version for SINEMA Remote Connect Client and recommends to update to the latest version.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

Open in CVSS calculator →

Weaknesses

CWE-416

Affected Products

OpenVPN

oss-project·USaka connect, openvpn access server

openvpnOn-premSecurity Product

Networking Infrastructure

openvpn access serverOn-premNetwork Device

Networking Infrastructure / vpn-gateway

OpenVPN 2 (Community)On-premNetwork Device

Networking Infrastructure / vpn-gateway

Access ServerOn-premWeb App

Networking Infrastructure / vpn-gateway

debian

oss-project·GBaka debian gnu/linux

debian linuxOn-premOS

Operating Systems / linux-distro

fedoraproject

oss-project·USaka fedora project

fedoraOn-premOS

Operating Systems / linux-distro

ООО «Ред Софт»

commercial·RUaka red soft

РЕД ОСOn-premOS

Operating Systems / linux-distro

OpenVPN, Inc.

commercial·USaka easy-rsa, openvpn 3 linux, openvpn connect

OpenVPNMixed

Security Products / secure-gateway-vpn

Exploitability

Official Patch Available

Is your org exposed to CVE-2023-46850?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/csaf/ssa-417159.json

cert-portal.siemens.com

https://cert-portal.siemens.com/productcert/html/ssa-417159.html

cert-portal.siemens.com

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-256-10.json

raw.githubusercontent.com

and 14 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2023-46850 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows