CVE-2021-45046CISA KEVEPSS p100.0%

CVE-2021-45046Apache Log4j2 Deserialization of Untrusted Data Vulnerability

Apache / Log4j2

Description

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.

Scoring

EPSS99.98% probability of exploitation · percentile 100.0% · 2026-06-15T12:03:41Z

CISA KEV entry

Added to KEV: 2023-05-01

(incoming)1

TypeTargetConfidenceTier
KEVEntryApache Log4j2 Deserialization of Untrusted Data Vulnerabilitykev-cve-2021-450460%live

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Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.