VULNERABILITY INTELLIGENCE

CVE-2021-30858

CVSS score8.8 HIGH
EPSS probability13.38%
CISA KEVKnown exploited vulnerability
Published2021-08-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Apple iOS, iPadOS, macOS Use-After-Free Vulnerability

Vendor / product: Apple / iOS, iPadOS, and macOS

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.

Weakness classification

  • nvd@nist.gov: CWE-416
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-416

Primary references