Search for vulnerabilities
Vulnerability details: VCID-6dkq-212a-nfdb
Vulnerability ID VCID-6dkq-212a-nfdb
Aliases CVE-2021-21148
Summary Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Status Published
Exploitability 2.0
Weighted Severity 9.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3.1 8.8 http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
ssvc Attend http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
epss 0.37786 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.37786 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.47742 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.47742 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.47742 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50033 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50033 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50033 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
epss 0.50292 https://api.first.org/data/v1/epss?cve=CVE-2021-21148
cvssv3.1 8.8 https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
ssvc Attend https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
cvssv3.1 8.8 https://crbug.com/1170176
ssvc Attend https://crbug.com/1170176
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 8.8 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
ssvc Attend https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
cvssv3.1 8.8 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/
ssvc Attend https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-21148
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-21148
archlinux Critical https://security.archlinux.org/AVG-1478
archlinux Critical https://security.archlinux.org/AVG-1525
cvssv3.1 8.8 https://security.gentoo.org/glsa/202104-08
ssvc Attend https://security.gentoo.org/glsa/202104-08
cvssv3.1 8.8 https://www.debian.org/security/2021/dsa-4858
ssvc Attend https://www.debian.org/security/2021/dsa-4858
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-21148
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21148
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21149
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21150
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21151
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21152
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21153
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21154
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21155
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21156
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21157
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1170176 https://crbug.com/1170176
202104-08 https://security.gentoo.org/glsa/202104-08
7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
ASA-202102-4 https://security.archlinux.org/ASA-202102-4
ASA-202102-6 https://security.archlinux.org/ASA-202102-6
AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/
AVG-1478 https://security.archlinux.org/AVG-1478
AVG-1525 https://security.archlinux.org/AVG-1525
Chrome-Array-Transfer-Bypass.html http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
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:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
CVE-2021-21148 https://nvd.nist.gov/vuln/detail/CVE-2021-21148
dsa-4858 https://www.debian.org/security/2021/dsa-4858
stable-channel-update-for-desktop_4.html https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
Data source KEV
Date added Nov. 3, 2021
Description Google Chromium V8 Engine contains a heap buffer overflow vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. 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 Nov. 17, 2021
Note 
https://nvd.nist.gov/vuln/detail/CVE-2021-21148
Ransomware campaign use Unknown
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.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:T/P:M/B:A/M:M/D:A/2025-01-29T16:55:23Z/ Found at http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.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:T/P:M/B:A/M:M/D:A/2025-01-29T16:55:23Z/ Found at https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://crbug.com/1170176
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:T/P:M/B:A/M:M/D:A/2025-01-29T16:55:23Z/ Found at https://crbug.com/1170176
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
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:T/P:M/B:A/M:M/D:A/2025-01-29T16:55:23Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/
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:T/P:M/B:A/M:M/D:A/2025-01-29T16:55:23Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21148
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-2021-21148
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://security.gentoo.org/glsa/202104-08
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:T/P:M/B:A/M:M/D:A/2025-01-29T16:55:23Z/ Found at https://security.gentoo.org/glsa/202104-08
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://www.debian.org/security/2021/dsa-4858
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:T/P:M/B:A/M:M/D:A/2025-01-29T16:55:23Z/ Found at https://www.debian.org/security/2021/dsa-4858
Exploit Prediction Scoring System (EPSS)
Percentile 0.97111
EPSS Score 0.37786
Published At Sept. 23, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:40:40.158139+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.17/main.json 37.0.0