Critical10.0Red Hat & Ubuntu Linux
Client impersonation during TLS 1.3 session resumption
CVE-2026-34873 Published Apr 1, 2026
CVE-2026-34873
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Client impersonation during TLS 1.3 session resumption. Red Hat rates this critical (CVSS 10). Weakness: CWE-290. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released.
Mitigation checklist
Recommended fix / mitigation
- Red Hat rates this critical; a fix erratum may not be out yet — apply the RHSA as soon as it publishes.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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