DEBIAN-CVE-2021-30858

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2021-30858
Published: 24 Aug 2021, 19:15
Last modified:20 Nov 2025, 10:15

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

24 Aug 2021, 19:15
Published
Vulnerability first disclosed
20 Nov 2025, 10:15
Last Modified
Vulnerability information updated

Description

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

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

    < 2.32.4-1~deb11u1 | < 2.32.4-1 | < 2.32.4-1 | < 2.32.4-1

  • debian•wpewebkit

    < 2.32.4-1~deb11u1 | < 2.32.4-1 | < 2.32.4-1 | < 2.32.4-1

References (1)