GnuTLS is a widely deployed TLS library; certificate-validation bypass in a core crypto library can impact many servers, clients and devices across organizations.
CVE-2026-95210
GnuTLS accepts certs with invalid extensions, enabling TLS validation bypass.
Is CVE-2026-95210 being exploited?
Not confirmed. CVE-2026-95210 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.23% probability of exploitation in the next 30 days.
How severe is CVE-2026-95210?
CVE-2026-95210 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-95210?
Not known from our data. No patch reference has been recorded for CVE-2026-95210, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-95210 affect?
CVE-2026-95210 affects GnuTLS 3.8.13, Applications and services using vulnerable GnuTLS, Linux distributions packaging GnuTLS, Embedded devices/firmware using GnuTLS. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-95210?
Upgrade to vendor-patched GnuTLS when available; otherwise restrict/segregate impacted services and use alternative TLS stacks.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
TLS certificate validation bypass allows MitM, server/client impersonation, session hijack and data/credential interception.
Immediate action required