Login Request a demo
Medium severity · published Jul 6, 2016
CVE-2016-1546
The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote…
5.9
CVSS
15.9%
EPSS
No
On KEV
Description
The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)15.9% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTTP Server · Apache
2.4.17; 2.4.18 · source: NVD
Affected product
HS
HTTP Server
Apache
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-1546
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-1546
Patch
http://httpd.apache.org/security/vulnerabilities_24.html
svn.apache.org
http://svn.apache.org/viewvc?view=revision&revision=1733727
www.apache.org
http://www.apache.org/dist/httpd/CHANGES_2.4
www.oracle.com
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
www.oracle.com
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
www.securityfocus.com
http://www.securityfocus.com/bid/92331
More from HTTP Server
9.8
CVE-2021-42013
Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)
9.8
CVE-2021-41773
Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49
9.1
CVE-2024-38475
Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.
9.0
CVE-2021-40438
mod_proxy SSRF
7.8
CVE-2019-0211
Apache HTTP Server Privilege Escalation Vulnerability