CVE-2021-30952KEV · OVERDUE

Apple Multiple Products Integer Overflow or Wraparound Vulnerability

High · published August 24, 2021

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.8. It is confirmed in active exploitation. It sits in the 94.1th percentile for exploit probability.

212
days past CISA
deadline
CVSS v3.1
8.8
EPSS
7%
Percentile
94.1
In the wild
Confirmed
What it is

An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.06964 · 94.1th percentile
Published
2021-08-24T18:50Z
KEV added
2026-03-05 · due 2026-03-26
EPSS history
Timeline
  • 05 MAR 00:00Z
    Added to CISA KEV — remediate by Mar 26
    kev
  • 24 AUG 18:50Z
    An integer overflow was addressed with improved input validation
    cvelistv5