What is CVE-2026-25834?

CVE-2026-25834 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.

Which CVE IDs does CVE-2026-25834 cover?

CVE-2026-25834 covers the following CVE IDs: CVE-2026-25834. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-25834?

CVE-2026-25834 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

CVE-2026-25834MediumCVSS 6.5

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-25834 →