CVE-2021-20201

A flaw was found in spice in versions before 0.14.92. A DoS tool might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection.

• CWE-400

• https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacksExploit, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1921846Issue Tracking, Third Party Advisory
• https://security.gentoo.org/glsa/202208-10Third Party Advisory
• https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacksExploit, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1921846Issue Tracking, Third Party Advisory
• https://security.gentoo.org/glsa/202208-10Third Party Advisory

Published

May 28, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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