OpenVPN up to 2.7_rc2 on Windows Interactive Service Agent allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in OpenVPN up to 2.7_rc2 on Windows and classified as problematic. This vulnerability affects unknown code of the component Interactive Service Agent. This manipulation causes allocation of resources. This vulnerability appears as CVE-2025-13751. The attack requires local access. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in OpenVPN up to 2.7_rc2 on Windows and classified as problematic. Affected by this vulnerability is an unknown part of the component Interactive Service Agent. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. The summary by CVE is:

Interactive service agent in OpenVPN version 2.5.0 through 2.6.16 and 2.7_alpha1 through 2.7_rc2 on Windows allows a local authenticated user to connect to the service and trigger an error causing a local denial of service.

It is possible to read the advisory at community.openvpn.net. This vulnerability is known as CVE-2025-13751 since 11/26/2025. The exploitation appears to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.6.17 or 2.7._rc3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-200999). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenVPN 2.6.17/2.7._rc3

Timelineinfo

11/26/2025 CVE reserved
12/03/2025 +7 days Advisory disclosed
12/03/2025 +0 days VulDB entry created
02/04/2026 +63 days VulDB entry last update

Sourcesinfo

Advisory: community.openvpn.net
Status: Confirmed

CVE: CVE-2025-13751 (🔒)
GCVE (CVE): GCVE-0-2025-13751
GCVE (VulDB): GCVE-100-334183
EUVD: 🔒

Entryinfo

Created: 12/03/2025 17:58
Updated: 02/04/2026 15:00
Changes: 12/03/2025 17:58 (67), 12/04/2025 11:17 (1), 12/12/2025 15:22 (1), 12/12/2025 17:02 (1), 01/30/2026 19:55 (12), 02/04/2026 14:57 (2), 02/04/2026 15:00 (5)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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