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Apache 2.4.49 - Path Traversal and Remote Code Execution CVE-2021-41773

CVSSv3 Score
Vulnerability description

A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the expected document root. If files outside of the document root are not protected by "require all denied" these requests can succeed. Additionally, this flaw could leak the source of interpreted files like CGI scripts. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions.\n

Risk description

The risk exists that a remote unauthenticated attacker can fully compromise the server to steal confidential information, install ransomware, or pivot to the internal network.


Upgrade Apache to version 2.4.50 or apply the relevant patch provided by the vendor.

Not available
Detectable with
Network Scanner
Scan engine
Exploitable with Sniper
CVE Published
Oct 5, 2021
Detection added at
Software Type
Not available
Not available
Not available