CVE-2017-9789

high Apache
CVSS v3 Base Score
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
6.1%
Exploitation probability in 30 days
Top 9% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: July 13, 2017 (3227 days ago)
Last Modified: May 13, 2026
Vendor: Apache
Source: NVD

Description

When under stress, closing many connections, the HTTP/2 handling code in Apache httpd 2.4.26 would sometimes access memory after it has been freed, resulting in potentially erratic behaviour.

CWE

CWE-416

Affected Products

apache http server

References

🔗 www.securityfocus.com 🔗 www.securitytracker.com 🔗 httpd.apache.org 🔗 lists.apache.org 🔗 lists.apache.org