CVE-2026-12996
Last modified
CVE-2026-12996 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openvpn | Openvpn | >= 2.6.0, < 2.6.21 |
| Openvpn | Openvpn | >= 2.7, < 2.7.5 |
| Debian | Debian Linux | 11.0 |
References
- https://lists.debian.org/debian-lts-announce/2026/07/msg00013.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-12996?
How severe is CVE-2026-12996?
How do I fix CVE-2026-12996?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-1299The email module, specifically the "BytesGenerator" class, …6
- CVE-2026-12990An access control vulnerability in the mobile app (APK v5.5.…7.7
- CVE-2026-12991The lack of cryptographic mechanisms to ensure the integrity…8.7
- CVE-2026-12992A flaw was found in Apicurio Registry. The WSDLReaderAccesso…7.4
- CVE-2026-12993A flaw was found in Apicurio Registry. The DocumentBuilderAc…6.5
- CVE-2026-12994The WCFM – Frontend Manager for WooCommerce plugin for WordP…5.3
- CVE-2026-12997The Gravity Forms plugin for WordPress is vulnerable to Dire…7.5
- CVE-2026-1300The Responsive Header plugin for WordPress is vulnerable to …4.4
- CVE-2026-13001The Podlove Podcast Publisher plugin for WordPress is vulner…9.8
- CVE-2026-13005The MxChat – AI Chatbot & Content Generation for WordPress p…4.4
- CVE-2026-13006ACE vulnerability in conditional configuration file processi…7
- CVE-2026-13007Tenable Identity Exposure contains multiple unauthenticated …8.7
Are you affected by CVE-2026-12996?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST