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Vulnerability details: VCID-9gwy-c6jy-qkhe
Vulnerability ID VCID-9gwy-c6jy-qkhe
Aliases CVE-2016-1546
Summary By manipulating the flow control windows on streams, a client was able to block server threads for long times, causing starvation of worker threads. Connections could still be opened, but no streams where processed for these. This issue affected HTTP/2 support in 2.4.17 and 2.4.18.
Status Published
Exploitability 0.5
Weighted Severity 2.1
Risk 1.1
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.41505 https://api.first.org/data/v1/epss?cve=CVE-2016-1546
epss 0.41505 https://api.first.org/data/v1/epss?cve=CVE-2016-1546
epss 0.41505 https://api.first.org/data/v1/epss?cve=CVE-2016-1546
epss 0.41505 https://api.first.org/data/v1/epss?cve=CVE-2016-1546
apache_httpd low https://httpd.apache.org/security/json/CVE-2016-1546.json
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-1546.json
https://api.first.org/data/v1/epss?cve=CVE-2016-1546
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1546
1336350 https://bugzilla.redhat.com/show_bug.cgi?id=1336350
CVE-2016-1546 https://httpd.apache.org/security/json/CVE-2016-1546.json
GLSA-201610-02 https://security.gentoo.org/glsa/201610-02
RHSA-2017:1161 https://access.redhat.com/errata/RHSA-2017:1161
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.97484
EPSS Score 0.41505
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:53:44.500901+00:00 Apache HTTPD Importer Import https://httpd.apache.org/security/json/CVE-2016-1546.json 38.6.0