CVE-2016-8740

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
68.3%
Exploitation probability in 30 days
Top 1% 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: December 5, 2016 (3447 days ago)
Last Modified: May 6, 2026
Vendor: Apache
Source: NVD

Description

The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.

CWE

CWE-20

Affected Products

apache http server

References

🔗 packetstormsecurity.com 🔗 rhn.redhat.com 🔗 www.securityfocus.com 🔗 www.securitytracker.com 🔗 access.redhat.com