CVE-2023-46849

7.5 HIGH 1% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 1.1% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-11-11 01:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 06:31 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.1% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-11-11 01:15 UTC
Last modified: 2026-06-17 06:31 UTC
Exploit probability: 1.1% · EPSS, next 30 days
Weakness: CWE-369
Record status: Modified

Affected

Openvpn ≤ 2.6.6
Openvpn Access Server ≤ 2.11.3
Openvpn Access Server 2.12.0
Openvpn Access Server 2.12.1
Debian Linux 12.0
Fedoraproject Fedora 39

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-46849.md and follow it. Check whether this project is affected by CVE-2023-46849. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record