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Vulnerability details: VCID-ys2m-rjtx-jba2
Vulnerability ID VCID-ys2m-rjtx-jba2
Aliases CVE-2021-21187
Summary Insufficient data validation in URL formatting in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to perform domain spoofing via IDN homographs via a crafted domain name.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
epss 0.00926 https://api.first.org/data/v1/epss?cve=CVE-2021-21187
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-21187
cvssv3.1 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-21187
archlinux High https://security.archlinux.org/AVG-1631
archlinux High https://security.archlinux.org/AVG-1633
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-21187
https://crbug.com/1155516
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21159
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21160
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21161
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21162
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21163
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21165
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21166
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21167
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21168
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21169
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21170
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21171
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21172
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21173
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21174
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21175
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21176
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21177
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21178
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21179
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21180
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21181
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21182
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21183
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21184
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21185
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21186
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21187
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21188
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21189
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21190
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21191
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21192
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21193
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21194
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21195
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21196
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21197
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21198
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21199
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21200
ASA-202103-19 https://security.archlinux.org/ASA-202103-19
AVG-1631 https://security.archlinux.org/AVG-1631
AVG-1633 https://security.archlinux.org/AVG-1633
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVE-2021-21187 https://nvd.nist.gov/vuln/detail/CVE-2021-21187
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21187
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:R/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21187
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 0.75091
EPSS Score 0.00926
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:30:43.081436+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.22/community.json 37.0.0