Is CVE-2026-25832 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-25832?

CVE-2026-25832 has a CVSS v3 severity of LOW (3.7).

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Description

In Mbed TLS 3.6.x before 3.6.7 and 4.1.x before 4.1.2, the TLS 1.3 client accepts HelloRetryRequest selecting an unadvertised group.