DEBIAN-CVE-2021-21806

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2021-21806
Downstream
DSA-4877-1
Published: 08 Jul 2021, 12:15
Last modified:19 Nov 2025, 02:01

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Jul 2021, 12:15
Published
Vulnerability first disclosed
19 Nov 2025, 02:01
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Systems

  • debian•webkit2gtk

    < 2.30.6-1 | < 2.30.6-1 | < 2.30.6-1 | < 2.30.6-1

  • debian•wpewebkit

    < 2.30.6-1 | < 2.30.6-1 | < 2.30.6-1 | < 2.30.6-1

References (1)