High severity · published Jul 8, 2021
CVE-2021-21806
An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64
8.8
CVSS
2.8%
EPSS
No
On KEV
Description
An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.
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)2.8% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webkitgtk · Webkitgtk
2.30.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21806
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21806
Mailing List
http://www.openwall.com/lists/oss-security/2021/07/23/1
Exploit
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1214
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