PT-2026-48560 · Openvpn+1 · Ovpn-Dco-Win

CVE-2026-11604 · Published 2026-06-10 · Updated 2026-06-10

Positive Technologies (AI Summary)

CVSS v4.0

5.6

Medium

Base vector

AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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

Name of the Vulnerable Software and Affected Versions OpenVPN ovpn-dco-win versions 2.0.0 through 2.8.3

Description An incorrect buffer size calculation in the epoch key generator allows a remote authenticated peer to trigger a heap-based buffer overflow and kernel memory corruption by sending a crafted data packet. This leads to a system crash, causing a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-131

CWE-122

Related Identifiers

CVE-2026-11604

Affected Products

Ovpn-Dco-Win

References · 5

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11604.json · Exploit
• https://community.openvpn.net/Security%20Announcements/CVE-2026-11604 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-11604 · Security Note
• https://osv.dev/vulnerability/CVE-2026-11604 · Vendor Advisory
• https://github.com/OpenVPN/ovpn-dco-win/releases · Note