{"cve":{"cve_id":"CVE-2021-45105","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.99999,"epss_percentile":0.9999,"epss_as_of":"2026-06-23","description":"Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 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Log4j2","version_start":"log4j-core","version_start_inclusive":true,"version_end":"2.17.0","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-log4j2:log4j-core:2.17.0"}],"exploit_refs":[],"news":[],"references":[{"url":"https://logging.apache.org/log4j/2.x/security.html","source_type":"MISC","tags":[]},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://www.kb.cert.org/vuls/id/930724","source_type":"MISC","tags":[]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2021/12/19/1","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"https://www.debian.org/security/2021/dsa-5024","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf","source_type":"MISC","tags":[]},{"url":"https://security.netapp.com/advisory/ntap-20211218-0001/","source_type":"MISC","tags":[]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1541/","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf","source_type":"MISC","tags":[]},{"url":"https://www.oracle.com/security-alerts/cpujan2022.html","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://www.oracle.com/security-alerts/cpujul2022.html","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2021-12-18T11:55:08Z","label":"CVE 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