CVE-2026-11604CWE-122CWE-131CWE-787

CVE-2026-11604

Medium · published June 11, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
26.0
In the wild
Unconfirmed
What it is

An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to trigger a heap-based buffer overflow and kernel memory corruption via a crafted data packet, resulting in a system crash (denial of service).

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00338 · 26.0th percentile
Weaknesses
CWE-122 · Heap-based Buffer Overflow; CWE-131 · Incorrect Calculation of Buffer Size; CWE-787 · Out-of-bounds Write
Published
2026-06-11T02:16Z
Affected products (1)
ProductVersionsFixed in
openvpn/ovpn-dco-win≥ 2.0.0, ≤ 2.8.3—
References (2)
https://community.openvpn.net/Security%20Announcements/CVE-2026-11604 · [email protected]https://github.com/OpenVPN/ovpn-dco-win/releases · [email protected]
EPSS history
Timeline
  • 10 JUN 21:04Z
    An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to…
    cvelistv5