peter bassill · operator
$ cve CVE-2021-30952 JSON

CVE-2021-30952 KEV

7.8
HIGH · CVSS 3.1 · EPSS 7% (pctl 94)

Patch first

On CISA KEV — known exploited in the wild, due 2026-03-26.

Description

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.

Scoring

CVSS7.8 (HIGH, v3.1)
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS6.96% — more likely to be exploited than 94% of all CVEs
WeaknessCWE-190
On CISA KEVyes — remediate by 2026-03-26
Public exploitnone known
Published2021-08-24
Last modified2026-06-17

CISA KEV

NameApple Multiple Products Integer Overflow or Wraparound Vulnerability
Added2026-03-05
Due2026-03-26
Vendor / productApple / Multiple Products
Ransomware usenone reported

Affected (10)

VendorProduct
appleipados
appleiphone os
applemacos
applesafari
appletvos
applewatchos
debiandebian linux
fedoraprojectfedora
webkitgtkwebkitgtk
wpewebkitwpe webkit

References

→ the Explorer  ·  watch your stack  ·  NVD