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Vulnerability details: VCID-tw4t-ewqx-w3dk
Vulnerability ID VCID-tw4t-ewqx-w3dk
Aliases CVE-2021-30529
Summary Use after free in Bookmarks 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)
System Score Found at
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
epss 0.00258 https://api.first.org/data/v1/epss?cve=CVE-2021-30529
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30529
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30529
archlinux High https://security.archlinux.org/AVG-1990
archlinux High https://security.archlinux.org/AVG-1991
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-2021-30529
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-2021-30529
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 0.4905
EPSS Score 0.00258
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:28:55.643519+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/edge/community.json 37.0.0