CVE-2025-10680Public exploitNetwork attack vector

Command execution via unsanitized DNS hook values

Published Oct 24, 2025 · Updated Oct 24, 2025

Command injection in OpenVPN 2.7_alpha1 through 2.7_beta1 allows remote authenticated servers to execute shell commands on POSIX clients. The dns-updown hook passes server-pushed --dns and --dhcp-option values into its helper script without sanitizing shell metacharacters. Exploitation requires a client connection to a malicious or compromised authenticated VPN server with --dns-updown enabled and runs commands with the client process's privileges.

CVSS severity8.8
High
EPSS probability7.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Command injection in OpenVPN 2.7_alpha1 through 2.7_beta1 allows remote authenticated servers to execute shell commands on POSIX clients. The dns-updown hook passes server-pushed --dns and --dhcp-option values into its helper script without sanitizing shell metacharacters. Exploitation requires a client connection to a malicious or compromised authenticated VPN server with --dns-updown enabled and runs commands with the client process's privileges.

The record

CVE
CVE-2025-10680
Published
Oct 24, 2025
Updated
Oct 24, 2025
Vendor
OpenVPN Inc.
Product
OpenVPN
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.7_alpha1 <=2.7_beta1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenVPN Inc. · OpenVPNversion=2.7_alpha1 <=2.7_beta1

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo