High severity · published Mar 16, 2021
CVE-2021-21193
Google Chromium Blink Use-After-Free Vulnerability
In wildKEV
8.8
CVSS
10%
EPSS
Yes
On KEV
Description
Use after free in Blink in Google Chrome prior to 89.0.4389.90 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)10.0% · higher than 96% 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 89.0.4389.90 · source: vendor, NVD
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
32 · source: NVD
CB
Chromium Blink · Google
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21193
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21193
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop_12.html
x_refsource_MISC
https://crbug.com/1186287
vendor-advisory
https://www.debian.org/security/2021/dsa-4886
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N52OWF4BAP3JNK2QYGU3Q6QUVDZDCIMQ/
vendor-advisory
https://security.gentoo.org/glsa/202104-08
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