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CVE-2021-45046: Apache Log4j2

EPSS99.9%No. 78 of 1739 in KEV
CVE year2021~2 yrs before listing
Same vendor in KEV41
Same product2
FieldValue
VendorApache
ProductLog4j2
NameApache Log4j2 Deserialization of Untrusted Data Vulnerability
Added to KEV2023-05-01
US federal due date2023-05-22
Ransomware useKnown
CWECWE-917

CISA 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.

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2021-44228Apache Log4j22021-12-1099.9%Known

NVD — CVE-2021-45046

Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page

A Apache Log4j2 vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2023-05-01.