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December 2021

Vulnerabilities first published in this month (UTC), newest first.

← November 2021 2021 / December January 2022 →
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All Critical High Medium Low Exploited only Public exploit

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  • Critical 9.0
    CVE-2021-45046 Exploited · Ransomware Public exploit Scanner template EPSS 100%

    Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attack

    It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-defaul…

    Apache Software Foundation Apache Log4j apache-log4j2 org.apache.logging.log4j:log4j-core Debian Ubuntu Maven
    KEV May 1, 2023
  • Critical 10.0
    CVE-2021-44228 Exploited · Ransomware Public exploit Scanner template EPSS 100%

    Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints

    Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who …

    Apache Software Foundation Apache Log4j2 apache-log4j2 org.apache.logging.log4j:log4j-core Debian Ubuntu Maven
    KEV Dec 10, 2021
  • Critical 9.8
    CVE-2021-20038 Exploited · Ransomware Public exploit Scanner template EPSS 100%

    A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows…

    SonicWall SonicWall SMA100 Network devices
    KEV Jan 28, 2022
  • Critical 9.8
    CVE-2021-44529 Exploited · Ransomware Public exploit Scanner template EPSS 99%

    A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execu…

    KEV Mar 25, 2024