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Vulnerability details: VCID-yxtk-z76x-9qc2
Vulnerability ID VCID-yxtk-z76x-9qc2
Aliases CVE-2021-30535
Summary Double free in ICU in Google Chrome prior to 91.0.4472.77 allowed a remote attacker 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-415 Double Free
System Score Found at
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
epss 0.00594 https://api.first.org/data/v1/epss?cve=CVE-2021-30535
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30535
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30535
archlinux High https://security.archlinux.org/AVG-1990
archlinux High https://security.archlinux.org/AVG-1991
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-30535
https://crbug.com/1194899
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30535
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
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-2021-30535 https://nvd.nist.gov/vuln/detail/CVE-2021-30535
USN-5156-1 https://usn.ubuntu.com/5156-1/
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-2021-30535
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-2021-30535
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 0.6831
EPSS Score 0.00594
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:31:51.030765+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.20/community.json 37.0.0