Critical
Security advisory
Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-12106
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 13:17 UTC · Revision 1
Source evidence
Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses
osv:CVE-2025-12106
Complete source record
{
"id": "72900707af6896c90e0f43597f3bdde7dd8b0f8edc83961f10ab15bc82f5954b",
"url": "https://osv.dev/vulnerability/CVE-2025-12106",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-12106",
"summary": "Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses",
"evidence": "osv:CVE-2025-12106",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2025-12106",
"aliases": [
"CVE-2025-12106"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openvpn/openvpn",
"type": "GIT",
"events": [
{
"introduced": "5662b3a8eb9e5744602a6da8cf3847455a0ba74f"
},
{
"last_affected": "e37f7692df1f258e2d94ee44ac75c5f24e4d6b2d"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.6.13:*:*:*:community:*:*:*",
"range": [
{
"introduced": "2.6.13"
},
{
"last_affected": "2.6.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.7:alpha1:*:*:community:*:*:*",
"range": [
{
"introduced": "2.7-alpha1"
},
{
"last_affected": "2.7-alpha1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.7:alpha2:*:*:community:*:*:*",
"range": [
{
"introduced": "2.7-alpha2"
},
{
"last_affected": "2.7-alpha2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.7:alpha3:*:*:community:*:*:*",
"range": [
{
"introduced": "2.7-alpha3"
},
{
"last_affected": "2.7-alpha3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.7:beta1:*:*:community:*:*:*",
"range": [
{
"introduced": "2.7-beta1"
},
{
"last_affected": "2.7-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.7:beta2:*:*:community:*:*:*",
"range": [
{
"introduced": "2.7-beta2"
},
{
"last_affected": "2.7-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.7:beta3:*:*:community:*:*:*",
"range": [
{
"introduced": "2.7-beta3"
},
{
"last_affected": "2.7-beta3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openvpn:openvpn:2.7:rc1:*:*:community:*:*:*",
"range": [
{
"introduced": "2.7-rc1"
},
{
"last_affected": "2.7-rc1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"2.6.13",
"2.7-alpha1",
"2.7-alpha2",
"2.7-alpha3",
"2.7-beta1",
"2.7-beta2",
"2.7-beta3",
"2.7-rc1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12106.json"
}
}
],
"modified": "2026-10-28T02:30:35.455859367Z",
"provider": "osv",
"references": [
"https://community.openvpn.net/Security%20Announcements/CVE-2025-12106",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12106.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-12106",
"https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html"
],
"provider_metadata": {
"cwe_ids": [
"CWE-126"
],
"cna_assigner": "OpenVPN",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "2.7_alpha1"
},
{
"last_affected": "2.7_rc1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12106.json"
}
},
"related_cves": [
{
"value": "CVE-2025-12106",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 502952,
"published_at": "2025-12-01T12:43:02.48+00:00"
}