---
title: "CVE-2026-84471: OpenVPN - Use After Free"
description: "OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 contain a use-after-free caused by crafted packets during TLS session promotion or expiry, letting remote authenticated peers cause denial of service or memory leak."
url: https://panop.io/threat-heartbeat/CVE-2026-84471/
---

# CVE-2026-84471 OpenVPN - Use After Free

OpenVPN 2.6.0 through 2.6.22 and 2.7\_alpha1 through 2.7.7 contain a use-after-free caused by crafted packets during TLS session promotion or expiry, letting remote authenticated peers cause denial of service or memory leak.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-84471)

## Details

Type

Use After Free

Impact

Denial Of Service

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

14 October 2026

Updated

15 October 2026

Weakness

[CWE-416](https://cwe.mitre.org/data/definitions/416.html)

## Vendor fix

Update to a version later than 2.6.22 or 2.7.7 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-84471](https://nvd.nist.gov/vuln/detail/CVE-2026-84471)
- [https://community.openvpn.net/Security%20Announcements/CVE-2026-84471](https://community.openvpn.net/Security%20Announcements/CVE-2026-84471)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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