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Vulnerability details: VCID-2x69-4b6w-aaak
Vulnerability ID VCID-2x69-4b6w-aaak
Aliases CVE-2018-16844
Summary Excessive CPU usage in HTTP/2
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-400 Uncontrolled Resource Consumption
System Score Found at
generic_textual low http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-16844.html
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16844.json
epss 0.0194 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.0194 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.0194 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.01965 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.01965 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.01965 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02072 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02111 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02111 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02111 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.02542 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.03558 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.03558 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.03558 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.03558 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06076 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.06331 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.11067 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
epss 0.14421 https://api.first.org/data/v1/epss?cve=CVE-2018-16844
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1644510
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16843
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16844
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16845
cvssv3 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
generic_textual low https://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html
cvssv2 7.8 https://nvd.nist.gov/vuln/detail/CVE-2018-16844
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-16844
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-16844
generic_textual Medium https://ubuntu.com/security/notices/USN-3812-1
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html
http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html
http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-16844.html
https://access.redhat.com/errata/RHSA-2018:3680
https://access.redhat.com/errata/RHSA-2018:3681
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16844.json
https://api.first.org/data/v1/epss?cve=CVE-2018-16844
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16844
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16843
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16844
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16845
http://seclists.org/fulldisclosure/2021/Sep/36
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html
https://support.apple.com/kb/HT212818
https://ubuntu.com/security/notices/USN-3812-1
https://usn.ubuntu.com/3812-1/
https://www.debian.org/security/2018/dsa-4335
http://www.securityfocus.com/bid/105868
http://www.securitytracker.com/id/1042038
1644510 https://bugzilla.redhat.com/show_bug.cgi?id=1644510
913090 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913090
cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2018-16844 https://nvd.nist.gov/vuln/detail/CVE-2018-16844
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16844.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2018-16844
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-16844
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-16844
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.8246
EPSS Score 0.0194
Published At May 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.