CVE-2026-12932

A memory leak in the tls-crypt-v2 client key extraction in OpenVPN 2.5.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service (memory exhaustion) via a flood of crafted packets

Database specific

{
    "cna_assigner": "OpenVPN",
    "cwe_ids": [
        "CWE-401"
    ],
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "2.5.0"
                },
                {
                    "last_affected": "2.6.20"
                },
                {
                    "introduced": "2.7_alpha1"
                },
                {
                    "last_affected": "2.7.4"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "introduced": "2.5.0"
                },
                {
                    "fixed": "2.6.20"
                },
                {
                    "introduced": "2.7_alpha1"
                },
                {
                    "fixed": "2.7.4"
                }
            ],
            "source": "DESCRIPTION"
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12932.json"
}

References

Affected packages

Git / github.com/openvpn/openvpn

Affected ranges

Type

GIT

Repo

https://github.com/openvpn/openvpn

Events

Introduced

a73072d8f780e888aca7d79b993b1e59c9d8f364

Fixed

4dee614e4e799d6d4a20bffabd902291c86406f2

Introduced

ee1577744fb09af760dc319d57746e6abc55db85

Fixed

b25bb2a8bda814edab39b4246d4e296330a7a29e

Database specific

{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "2.5.0"
        },
        {
            "fixed": "2.6.21"
        },
        {
            "introduced": "2.7"
        },
        {
            "fixed": "2.7.5"
        }
    ]
}

Affected versions

v2.*

v2.7.0

v2.7.1

v2.7.2

v2.7.3

v2.7.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12932.json"