CVE-2026-11604

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Source
https://cve.org/CVERecord?id=CVE-2026-11604
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-11604.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-11604
Published
2026-06-10T21:04:37.141Z
Modified
2026-07-08T08:04:54.482008258Z
Severity
  • 5.6 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H CVSS Calculator
Summary
[none]
Details

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).

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "2.0.0"
                },
                {
                    "last_affected": "2.5.8"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11604.json",
    "cna_assigner": "OpenVPN",
    "cwe_ids": [
        "CWE-122",
        "CWE-131",
        "CWE-787"
    ]
}
References

Affected packages

Git / github.com/openvpn/ovpn-dco-win

Affected ranges

Type
GIT
Repo
https://github.com/openvpn/ovpn-dco-win
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
435b881caab4e4303a23eb00b373eee3caf37903
Database specific 
{
    "source": "DESCRIPTION",
    "extracted_events": [
        {
            "introduced": "2.0.0"
        },
        {
            "fixed": "2.8.3"
        }
    ]
}

Affected versions

0.*
0.6.5
0.6.7
0.6.8
0.7.1
0.7.4
0.7.6
0.8.0
0.8.1
0.8.2
0.8.3
0.9.0
0.9.1
0.9.2
0.9.3
0.9.4
1.*
1.0.0
2.*
2.5.0
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.5.6
2.5.9
2.6.1
2.6.2
2.7.0
2.7.1
2.8.0
2.8.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-11604.json"