The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OpenVPN OpenVPN unaffected
Version Status Constraints
2.6.0 affected ≤ 2.6.22
2.7_alpha1 affected ≤ 2.7.7

No data.

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Project Subscriptions

No data.

Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-8852-1 OpenVPN vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://community.openvpn.net/Security%20Announcements/CVE-2026-84471 cve-icon cve-icon
History

Wed, 14 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
Description The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.
Weaknesses CWE-416
References
Metrics cvssV4_0

{'score': 7.2, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: OpenVPN

Published:

Updated: 2026-10-14T14:29:04.851Z

Reserved: 2026-09-01T20:18:26.416Z

Link: CVE-2026-84471

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T15:17:26.077

Modified: 2026-10-14T15:17:26.077

Link: CVE-2026-84471

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses