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PatchSiren cyber security CVE debrief

CVE-2026-82325 OpenVPN CVE debrief

A use-after-free vulnerability in OpenVPN ovpn-dco-win driver versions 2.5.0 through 2.8.6 allows local authenticated users to cause a system crash via crafted control messages. This vulnerability has a medium CVSS score of 6.8 and can potentially lead to denial-of-service attacks. Defenders and administrators of systems using OpenVPN ovpn-dco-win driver versions 2.5.0 through 2.8.6 should assess exposure and prioritize verification of affected systems. The CVE record and NVD entry provide limited information about the vulnerability.

Vendor
OpenVPN
Product
ovpn-dco-win
CVSS
MEDIUM 6.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-07
Original CVE updated
2026-09-07
Advisory published
2026-09-07
Advisory updated
2026-09-07

Who should care

Defenders and administrators of systems using OpenVPN ovpn-dco-win driver versions 2.5.0 through 2.8.6 should assess exposure and prioritize verification of affected systems.

Why it matters

Defenders should care about CVE-2026-82325 because it allows local authenticated users to cause system crashes, potentially leading to denial-of-service. Affected systems require verification and prioritization.

  • System crashes caused by crafted control messages
  • Potential for local authenticated users to cause denial-of-service

Technical summary

The OpenVPN ovpn-dco-win driver versions 2.5.0 through 2.8.6 are vulnerable to a use-after-free vulnerability, which allows local authenticated users to cause a system crash via crafted control messages. This vulnerability has a medium CVSS score of 6.8 and can potentially lead to denial-of-service attacks. The vulnerability affects local authenticated users and can cause system crashes.

Defensive priority

Assess exposure and prioritize verification of affected systems.

Recommended defensive actions

  • Assess exposure of OpenVPN ovpn-dco-win driver versions 2.5.0 through 2.8.6
  • Prioritize verification of affected systems
  • Monitor system crashes caused by crafted control messages

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. The OpenVPN ovpn-dco-win driver versions 2.5.0 through 2.8.6 are vulnerable to a use-after-free vulnerability, which allows local authenticated users to cause a system crash via crafted control messages. Evidence is limited to CVE Program and NVD sources.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-82325 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-82325

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

  • CVE-2026-82325 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-82325

    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.