CVE-2026-78221

high Red Hat
CVSS v3 Base Score
7.5
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 98% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
None
Availability
High
Published: September 7, 2026 (3 days ago)
Last Modified: September 7, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in OpenVPN. An incorrect buffer size calculation within the Windows Interactive Service allows local authenticated users to trigger memory corruption or disclose sensitive information. This vulnerability can be exploited by providing specially crafted inputs.

CWE

CWE-120

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 community.openvpn.net