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Vulnerability details: VCID-aswr-a7yz-tbb3
Vulnerability ID VCID-aswr-a7yz-tbb3
Aliases CVE-2021-30533
Summary Multiple vulnerabillities have been found in Chromium and Google Chrome, the worst of which could allow remote attackers to execute arbitrary code.
Status Published
Exploitability 2.0
Weighted Severity 8.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
epss 0.10532 https://api.first.org/data/v1/epss?cve=CVE-2021-30533
cvssv3.1 6.5 https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
ssvc Track https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
cvssv3.1 6.5 https://crbug.com/1145553
ssvc Track https://crbug.com/1145553
cvssv3.1 6.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
cvssv3.1 6.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
archlinux High https://security.archlinux.org/AVG-1990
archlinux High https://security.archlinux.org/AVG-1991
cvssv3.1 6.5 https://security.gentoo.org/glsa/202107-06
ssvc Track https://security.gentoo.org/glsa/202107-06
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-30533
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30533
1145553 https://crbug.com/1145553
990079 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990079
ASA-202106-2 https://security.archlinux.org/ASA-202106-2
AVG-1990 https://security.archlinux.org/AVG-1990
AVG-1991 https://security.archlinux.org/AVG-1991
ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
GLSA-202107-06 https://security.gentoo.org/glsa/202107-06
PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
stable-channel-update-for-desktop_25.html https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
Data source KEV
Date added June 27, 2022
Description Google Chromium PopupBlocker contains an insufficient policy enforcement vulnerability that allows a remote attacker to bypass navigation restrictions via a crafted iframe. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
Required action Apply updates per vendor instructions.
Due date July 18, 2022
Note 
https://nvd.nist.gov/vuln/detail/CVE-2021-30533
Ransomware campaign use Unknown
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
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: SSVCv2/E:A/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-04T15:04:01Z/ Found at https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://crbug.com/1145553
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: SSVCv2/E:A/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-04T15:04:01Z/ Found at https://crbug.com/1145553
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
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: SSVCv2/E:A/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-04T15:04:01Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
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: SSVCv2/E:A/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-04T15:04:01Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://security.gentoo.org/glsa/202107-06
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: SSVCv2/E:A/A:N/T:P/P:M/B:A/M:M/D:T/2025-02-04T15:04:01Z/ Found at https://security.gentoo.org/glsa/202107-06
Exploit Prediction Scoring System (EPSS)
Percentile 0.93234
EPSS Score 0.10532
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:03:27.574170+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202107-06 38.0.0