CVE-2021-3563

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

December 11, 2025

Last Seen

December 11, 2025

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

OpenStack Keystone Vulnerabilities Allow Unauthorized Access27.9

OpenStack Keystone has multiple vulnerabilities that could allow remote attackers to gain unauthorized access and escalate privileges. The issues include improper handling of ec2tokens and s3tokens APIs and insufficient validation of application secrets. These vulnerabilities could lead to significa...