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Vulnerability details: VCID-gfgz-tm8e-aaar
Vulnerability ID VCID-gfgz-tm8e-aaar
Aliases CVE-2021-30527
Summary Use after free in WebUI in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-30527.html
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
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epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
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epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
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epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
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epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
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epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00259 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
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epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00577 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00577 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00577 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00577 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-30527
generic_textual Medium https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30527
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30527
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30527
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30527
archlinux High https://security.archlinux.org/AVG-1990
archlinux High https://security.archlinux.org/AVG-1991
archlinux High https://security.archlinux.org/AVG-1992
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-30527.html
https://api.first.org/data/v1/epss?cve=CVE-2021-30527
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
https://crbug.com/1199198
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30527
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
https://security.gentoo.org/glsa/202107-06
990079 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990079
ASA-202106-2 https://security.archlinux.org/ASA-202106-2
ASA-202106-33 https://security.archlinux.org/ASA-202106-33
AVG-1990 https://security.archlinux.org/AVG-1990
AVG-1991 https://security.archlinux.org/AVG-1991
AVG-1992 https://security.archlinux.org/AVG-1992
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: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-2021-30527 https://nvd.nist.gov/vuln/detail/CVE-2021-30527
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30527
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:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30527
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:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30527
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 0.46429
EPSS Score 0.00259
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.