Vulnerability DatabaseCVE-2021-20201
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CVE-2021-20201
Published:May 28, 2021
Updated:September 21, 2026
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.
Related Resources (8)
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-20201
https://access.redhat.com/security/cve/CVE-2021-20201
https://security.gentoo.org/glsa/202208-10
https://security.alpinelinux.org/vuln/CVE-2021-20201
https://gitlab.freedesktop.org/spice/spice/-/commit/95a0cfac8a1c8eff50f05e65df945da3bb501fc9
https://bugzilla.redhat.com/show_bug.cgi?id=1921846
https://security-tracker.debian.org/tracker/CVE-2021-20201
https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacks
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Uncontrolled Resource Consumption
CWE-400
EPSS
Base Score:
2.70