CVE Watch—

CVE-2021-42013

Apache HTTP Server Path Traversal Vulnerability

CVSS

—

No CVSS

EPSS

100.0%

p100

KEV

YES

Nov 3, 2021

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

100.0%EPSS · 30 days100.0%

2026-09-162026-10-14

KEV catalog record

Product

Apache / HTTP Server

Vulnerability

Apache HTTP Server Path Traversal Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

Nov 17, 2021

Known ransomware use

Yes

Summary 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.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-42013

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2021-41773—

100.0%

KEV—80Apache HTTP Server Path Traversal Vulnerability—CVE-2024-38475—

100.0%

KEV—80Apache HTTP Server Improper Escaping of Output Vulnerability—CVE-2019-0211—

99.2%

KEV—80Apache HTTP Server Privilege Escalation Vulnerability—