CVE-2026-11604

Summary

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).

Affected Software

VendorProductVersion RangeStatus
OpenVPNovpn-dco-win2.0.0 <= 2.5.8affected

Weaknesses

  • CWE-131: CWE-131 Incorrect calculation of buffer size
  • CWE-122: CWE-122 Heap-based buffer overflow
  • CWE-787: CWE-787 Out-of-bounds write

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References