CVE-2016-1546
5.9
MEDIUM
CVSS 3.1
EPSS 52.4%
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.
How to fix CVE-2016-1546
To remediate CVE-2016-1546, upgrade the affected package to a fixed version below.
- Debian/apache2—upgrade to 2.4.20-1 or later
Is CVE-2016-1546 being exploited?
Likely — EPSS is 52.4%, placing CVE-2016-1546 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- from 0, < 2.4.20-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |