CVE-2025-2704 Details
Description
OpenVPN version 2.6.1 through 2.6.13 in server mode using TLS-crypt-v2 allows remote attackers to trigger a denial of service by corrupting and replaying network packets in the early handshake phase
A denial-of-service vulnerability has been identified in OpenVPN version 2.6.1 through 2.6.13, specifically in server mode using TLS-crypt-v2. Remote attackers can exploit this vulnerability by corrupting and replaying network packets during the early handshake phase, potentially causing the OpenVPN server to abort with an ASSERT() message. This issue does not affect OpenVPN clients.
Users can upgrade to OpenVPN version 2.6.14, which has been released and includes a critical security fix for this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 7, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-754 | Improper Check for Unusual or Exceptional Conditions | [email protected] |
| CWE-754 | Improper Check for Unusual or Exceptional Conditions | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openvpn openvpn | >= 2.6.1, <= 2.6.13 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Oct 23, 2025 | CVE Modified | [email protected] |
| May 24, 2025 | Initial Analysis | [email protected] |
| Apr 7, 2025 | CVE Modified | CISA-ADP |
| Apr 3, 2025 | CVE Modified | CVE |
| Apr 2, 2025 | New CVE Received | [email protected] |