CVE-2025-13086

Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://community.openvpn.net/Security%20Announcements/CVE-2025-13086	Vendor Advisory
https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.html	Mailing List Release Notes
https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html	Mailing List Release Notes

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openvpn:openvpn:::::community:::*
	cpe:2.3:a:openvpn:openvpn:2.7:alpha1:::community:::*
	cpe:2.3:a:openvpn:openvpn:2.7:alpha2:::community:::*
	cpe:2.3:a:openvpn:openvpn:2.7:alpha3:::community:::*
	cpe:2.3:a:openvpn:openvpn:2.7:beta1:::community:::*
	cpe:2.3:a:openvpn:openvpn:2.7:beta2:::community:::*
	cpe:2.3:a:openvpn:openvpn:2.7:beta3:::community:::*
	cpe:2.3:a:openvpn:openvpn:2.7:rc1:::community:::*

History

25 Sep 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) La validación incorrecta de las direcciones IP de origen en OpenVPN versión 2.6.0 hasta 2.7_rc1 permite a un atacante abrir una sesión desde una dirección IP diferente que no inició la conexión, resultando en una denegación de servicio para el cliente de origen.

Information

Published : 2025-12-03 20:16

Updated : 2026-09-25 23:10

NVD link : CVE-2025-13086

Mitre link : CVE-2025-13086

CVE.ORG link : CVE-2025-13086

JSON object : View

Products Affected

openvpn

openvpn

CWE

CWE-940

Improper Verification of Source of a Communication Channel

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"modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security@openvpn.net", "affectedData": [{"vendor": "OpenVPN", "product": "OpenVPN", "versions": [{"status": "affected", "version": "2.6.0", "versionType": "semver", "lessThanOrEqual": "2.6.15"}, {"status": "affected", "version": "2.7_alpha1", "versionType": "semver", "lessThanOrEqual": "2.7_rc1"}], "defaultStatus": "unaffected"}]}], "published": "2025-12-03T20:16:24.353", "references": [{"url": "https://community.openvpn.net/Security%20Announcements/CVE-2025-13086", "tags": ["Vendor Advisory"], "source": "security@openvpn.net"}, {"url": "https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.html", "tags": ["Mailing List", "Release Notes"], "source": "security@openvpn.net"}, {"url": "https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html", "tags": ["Mailing List", "Release Notes"], "source": "security@openvpn.net"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@openvpn.net", "description": [{"lang": "en", "value": "CWE-940"}]}], "descriptions": [{"lang": "en", "value": "Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client"}, {"lang": "es", "value": "La validaci\u00f3n incorrecta de las direcciones IP de origen en OpenVPN versi\u00f3n 2.6.0 hasta 2.7_rc1 permite a un atacante abrir una sesi\u00f3n desde una direcci\u00f3n IP diferente que no inici\u00f3 la conexi\u00f3n, resultando en una denegaci\u00f3n de servicio para el cliente de origen."}], "lastModified": "2026-09-25T23:10:00.463", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "61429F75-3DE9-499D-B00B-407E476A7B0F", "versionEndExcluding": "2.6.16", "versionStartIncluding": "2.6.0"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.7:alpha1:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "474A2F74-9D40-437D-B71A-43A8A26C2A55"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.7:alpha2:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "1F5B810E-3614-4332-9281-B2AA28BD9403"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.7:alpha3:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "2A423301-191A-4578-B824-22024A225C1C"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.7:beta1:*:*:community:*:*:*", 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