CYBERSECURITYTRACKER
Vulnerabilities

CVE-2021-45046

Apache Log4j2: CWE-917

What it is

Reported

Apache Log4j2 contains a deserialization of untrusted data vulnerability due to the incomplete fix of CVE-2021-44228, where the Thread Context Lookup Pattern is vulnerable to remote code execution in certain non-default configurations.

Source reported · Source: NVD · Complete source description.
Dates
Source last published: · Source last updated:

What is affected

Reported

Apache; Log4j2. Product-level identification only; no affected-version conclusion is available from this field.

Source reported · Source: NVD
Dates
Source last published: · Source last updated:

Urgency and basis

Tracker computed

Act now

Current priority score and EPSS: loading from the tracker record. They are read when this page loads and are not shown without JavaScript. They change daily and are not part of "Source last updated".

Tracker decision tier from the evidence detailed below
Dates
Source last updated:

Exploitation evidence

Reported

Active exploitation · CISA KEV · VulnCheck KEV · ENISA exploited-vulnerability catalog

Source reported
Dates
Active since: · CISA KEV added: · VulnCheck KEV added: · ENISA added: · Source last updated:

What to do

Reported

Apply updates per vendor instructions.

Source remediation ↗
Source reported · Tracked source remediation field
Dates
Source last updated:

Detection and validation

Mapped metadata availability only. These signals do not change priority.

  • Sigma

    LockerGoga Ransomware Activity. Level: critical. Status: stable.

    Open Sigma metadata

  • Atomic

    Abuse Nslookup with DNS Records. Executor: powershell. Elevation: not reported.

    Open Atomic metadata

  • Nuclei

    Apache Log4j2 - Remote Code Injection. Check identifier: CVE-2021-45046.

    Open Nuclei metadata

  • Metasploit

    Not mapped by tracked sources.

Evidence detail

Loading the full tracker evidence record…

Glossary

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