KEV Entry

CVE-2021-45046

Known Exploited Vulnerability Entry CISA

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Entry Details
Confirmed Exploited

CVE-2021-45046

2023-05-01 02:00 CEST

Timestamps

2023-05-01

2023-05-01

Scope

Apache Log4j2 Deserialization of Untrusted Data Vulnerability | Affected: 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. | Required action: Apply updates per vendor instructions. | Due date: 2023-05-22 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://logging.apache.org/log4j/2.x/security.html; https://nvd.nist.gov/vuln/detail/CVE-2021-45046

References
  • {'id': 'CVE-2021-45046', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-45046'}

ddbdb002-5ee0-4d1b-98ad-d9d7ae1fb0e4

CISA
405284c2-e461-4670-8979-7fd2c9755a60

2026-10-02 08:09 CEST

2026-10-02 08:09 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-917"
  ],
  "date_added": "2023-05-01",
  "due_date": "2023-05-22",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Known",
  "product": "Log4j2",
  "vendorProject": "Apache",
  "vulnerabilityName": "Apache Log4j2 Deserialization of Untrusted Data Vulnerability"
}
 -
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