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CVE-2021-42013: Apache HTTP Server

EPSS99.9%No. 89 of 1739 in KEV
CVE year2021listed the same year
Same vendor in KEV41
Same product4
FieldValue
VendorApache
ProductHTTP Server
NameApache HTTP Server Path Traversal Vulnerability
Added to KEV2021-11-03
US federal due date2021-11-17
Ransomware useKnown
CWECWE-22

CISA description

Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default require all denied or if CGI scripts are enabled. This CVE ID resolves an incomplete patch for CVE-2021-41773.

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2024-38475Apache HTTP Server2025-05-0199.9%Unknown
CVE-2021-41773Apache HTTP Server2021-11-0399.9%Known
CVE-2019-0211Apache HTTP Server2021-11-0365.0%Unknown

NVD — CVE-2021-42013

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 HTTP Server vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2021-11-03.