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CVE-2021-21806

Date: July 8, 2021

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.

Severity Score

Related Resources (8)

https://security-tracker.debian.org/tracker/CVE-2021-21806
https://security.alpinelinux.org/vuln/CVE-2021-21806
https://nvd.nist.gov/vuln/detail/CVE-2021-21806
https://access.redhat.com/security/cve/CVE-2021-21806
http://www.openwall.com/lists/oss-security/2021/07/23/1
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-21806
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1214
https://www.mend.io/vulnerability-database/CVE-2021-21806

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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