High severity · published Apr 26, 2021
CVE-2021-21220
Google Chromium V8 Improper Input Validation Vulnerability
In wildKEV
8.8
CVSS
70.4%
EPSS
Yes
On KEV
Description
Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)70.4% · higher than 99% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 3, 2021
Federal remediation dueNov 17, 2021
Ransomware campaign useNot known
Affected products
Which versions
CH
Chrome · Google
before 89.0.4389.128 · source: vendor, NVD
FE
Fedora · Fedoraproject
32; 33; 34 · source: NVD
CV
Chromium V8 · Google
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21220
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21220
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
chromereleases.googleblog.com
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html
crbug.com
https://crbug.com/1196683
vendor-advisory
https://security.gentoo.org/glsa/202104-08
packetstormsecurity.com
http://packetstormsecurity.com/files/162437/Google-Chrome-XOR-Typer-Out-Of-Bounds-Access-Remote-Code-Execution.html
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/
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