CriticalCVECISA — Known Exploited Vulnerabilities· 1 May 2023

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

Severity: Critical · Kind: Vulnerability

Plain-English summary on the way

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From the source

Apache Log4j2. 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. Required action: Apply updates per vendor instructions.

Vulnerability facts

CVE: CVE-2021-45046
On CISA KEV since: 2023-05-01
Ransomware use: Known

Read the original advisory →← All threat intel

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Plain-English summaries are AI-generated and reviewed for tone, not technical accuracy. For incident response, always rely on the original source linked above.