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Vulnerability details: VCID-gb2z-ng41-d7du
Vulnerability ID VCID-gb2z-ng41-d7du
Aliases CVE-2021-30528
Summary Use after free in WebAuthentication in Google Chrome on Android prior to 91.0.4472.77 allowed a remote attacker who had compromised the renderer process of a user who had saved a credit card in their Google account 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
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
epss 0.00838 https://api.first.org/data/v1/epss?cve=CVE-2021-30528
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30528
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30528
archlinux High https://security.archlinux.org/AVG-2044
Reference id Reference type URL
http://packetstormsecurity.com/files/172844/Chrome-Sandbox-Escape.html
https://api.first.org/data/v1/epss?cve=CVE-2021-30528
https://crbug.com/1206329
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30528
990079 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990079
AVG-2044 https://security.archlinux.org/AVG-2044
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-2021-30528 https://nvd.nist.gov/vuln/detail/CVE-2021-30528
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-2021-30528
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-2021-30528
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 0.73738
EPSS Score 0.00838
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:35:45.075369+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.14/community.json 37.0.0