CVE Tools
Sign in

CVE-2023-46849

Published: Nov 11, 2023Updated: Jun 11, 2025 Sources: CVE List NVD BDUCWE-369
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.1%
Top 37.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-369

Affected Products

РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
OpenVPNOpenVPN, Inc.
Mixed
Security Products / secure-gateway-vpn
openvpnopenvpn
On-premSecurity Product
Networking Infrastructure
openvpn access serveropenvpn
On-premNetwork Device
Networking Infrastructure / vpn-gateway
debian linuxdebian
On-premOS
Operating Systems / linux-distro
ооо «ред софт»commercialRUOperating Systemsaka red soft
openvpn, inc.commercialUSSecurity Productsaka openvpn connect, easy-rsa, openvpn 3 linux
openvpnoss-projectUSNetworking Infrastructureaka openvpn access server, connect
debianoss-projectGBOperating Systemsaka debian gnu/linux
and 3 more affected products View all →

Exploitability

Official Patch Available

References

https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/
openvpn.net
https://redos.red-soft.ru/support/secure/
redos.red-soft.ru
https://community.openvpn.net/openvpn/wiki/CVE-2023-46849
community.openvpn.net
and 4 more references View all →

Timeline

Published
Nov 11, 2023
Last Updated
Jun 11, 2025

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2023-46849 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