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Advisory severityMedium4.9Red Hat Linux

Medium [CVE-2026-13698] From CVEorg collector

This medium-severity Red Hat Linux advisory covers CVE-2026-13698.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-13698 Source published Source updated

VulniPulse record published Record updated

CVE-2026-13698
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

Summary

A memory leak in OpenVPN version 2.5.0 through 2.5.11, 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers with a valid tls-crypt-v2 client key to potentially cause a denial of service A flaw was found in OpenVPN. This can disrupt the availability of the OpenVPN service.

This vulnerability requires a valid `tls-crypt-v2` client key, limiting the attack surface to authenticated remote attackers. While requiring authentication, repeated exploitation could exhaust system resources, impacting service availability on Red Hat supported OpenVPN deployments.

Red Hat severity: Moderate — CVSS 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Is CVE-2026-13698 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-13698 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-13698?

The advisory VulniPulse tracks names no fixed release. Follow Red Hat's guidance for workarounds and updates.

Confirm against the vendor advisory before you patch.

Affected versions
  • 2.5.0
  • 2.5.11
  • 2.6.0
  • 2.6.20
  • 2.7.4

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

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