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CVE-2026-9560 OpenVPN Inc CVE debrief

CVE-2026-9560 documents a privilege escalation vulnerability in OpenVPN Connect for macOS, affecting versions 3.5.1 through 3.8.1. The flaw resides in the application's background service, where improper validation of local inter-process communication (IPC) channel requests allows unprivileged local attackers to execute arbitrary commands with elevated privileges. The CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H) reflects high impact across confidentiality, integrity, and availability with local attack vector but no privileges or user interaction required. The vulnerability was published to NVD on 2026-05-26 and remains in 'Awaiting Analysis' status. Associated CWE classifications include CWE-78 (OS Command Injection), CWE-267 (Privilege Defined With Unsafe Actions), CWE-270 (Privilege Context Switching Error), and CWE-648 (Incorrect Use of Privileged APIs). The vendor attribution to OpenVPN is derived from reference domain evidence with low confidence and requires review. No known exploitation in ransomware campaigns has been documented, and the vulnerability is not listed in CISA KEV.

Vendor
OpenVPN Inc
Product
OpenVPN Connect
CVSS
CRITICAL 9.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-26
Original CVE updated
2026-07-23
Advisory published
2026-05-26
Advisory updated
2026-07-23

Who should care

Organizations deploying OpenVPN Connect on macOS endpoints; macOS system administrators managing VPN client software; security teams monitoring for local privilege escalation vectors; endpoint protection platform operators

Technical summary

The vulnerability exists in the background service component of OpenVPN Connect for macOS versions 3.5.1 through 3.8.1. Insufficient validation of requests received through the local IPC channel permits command injection with elevated privileges. An attacker with local access can exploit this to execute arbitrary commands as the privileged service user without requiring prior privileges or user interaction. The attack complexity is low, and the scope of impact extends beyond the vulnerable component to the underlying system.

Defensive priority

critical

Recommended defensive actions

  • Upgrade OpenVPN Connect for macOS to a version newer than 3.8.1 once available; consult vendor release notes for specific patched version
  • Restrict local access to affected macOS systems to trusted users until patching is complete
  • Monitor for anomalous privileged process execution or unexpected background service activity on endpoints running OpenVPN Connect
  • Review application IPC channel implementations for similar validation weaknesses in other VPN client software
  • Await NVD analysis completion for additional technical details and confirmed patch availability

Evidence notes

Vendor attribution based on reference domain candidate 'Openvpn' with low confidence; canonical source marked as weak. CVE status 'Awaiting Analysis' per NVD. CVSS 4.0 vector and CWE classifications sourced from official NVD record. No KEV entry present.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-9560 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-9560

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-9560 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-9560

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.