OpenVPN Multiple Vulnerabilities Enable DoS, Information Disclosure

Summary

CERT-Bund published security advisory WID-SEC-2026-1264 disclosing multiple vulnerabilities in OpenVPN that enable denial of service attacks and information disclosure. Affected versions are OpenVPN <2.7.2 and OpenVPN <2.6.20, impacting Linux, UNIX, and Windows systems. The vulnerabilities carry a CVSS Base Score of 7.5 (high) and Temporal Score of 6.5 (medium). Mitigation measures are available; organizations running affected OpenVPN versions should apply patches immediately.

About this source

CERT-Bund is the German federal cybersecurity agency's incident response team, run by the BSI. Their advisory feed publishes vulnerability disclosures and active exploitation warnings for software in widespread enterprise use: VPN appliances, email servers, file transfer products, ERP systems, browsers, hypervisors. Around 280 advisories a month, each with a CVSS score, affected versions, and remediation guidance. The advisories are written in German but cover the same vulnerabilities that show up in CISA, NCSC-UK, and JPCERT bulletins, often hours earlier. Watch this if you patch enterprise software, run a SOC, or write detection rules. GovPing publishes each advisory with the affected vendor, CVSS score, and original CERT-Bund link.

What changed

GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.

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