CVE-2021-30858
HIGH8.8⚠ KEVEPSS 0.79%Apple iOS, iPadOS, macOS Use-After-Free Vulnerability
Published: 8/24/2021Modified: 4/28/2026Added to CISA KEV: 11/3/2021
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.
Affected packages (2)
- Debian/webkit2gtkfrom 0, < 2.32.4-1~deb11u1
- Debian/wpewebkitfrom 0, < 2.32.4-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |