Threat Response- UPDATE: Vulnerability in Apache HTTP Server 2.4.49/2.4.50



Last Wednesday, 6 October, we informed you via a Threat Response about a vulnerability in Apache HTTP Server. By now, more information has become available that we want to share with you. vThe Apache Software Foundation has announced that the previously released patch does not work under certain circumstances [1]. Therefore, to mitigate this vulnerability updating to Apache HTTP Server 2.4.50 is not sufficient. Instead, users should update to version 2.4.51 to mitigate the vulnerability.


The impact remains unchanged and is classified as high.


The risk remains unchanged and is classified as high.


To mitigate this vulnerability, it is necessary to upgrade Apache HTTP Server to version 2.4.51.

What will Northwave do?

This vulnerability is covered within the Northwave Vulnerability Management service. Customers of this service will be notified in case a vulnerable system is detected in their infrastructure.

Northwave will monitor any developments regarding this vulnerability. If new critical information about this threat arises we will reach out to you. If you need additional information you can call us by phone or send us an email.

E-mail: [email protected]
Do you have an incident right now? Call our CERT number: +31 (0)85 043 7909 or 0800-1744 (alleen vanuit Nederland)

Disclaimer applies, see below.




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