Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-31010

CVE-2021-31010HIGH

Apple iOS, macOS, watchOS

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  H  N    7.5   .0367   89.3   YES

AFFECTED
  Product  Versions       Fixed
  macOS    unspecified –  —
  macOS    unspecified –  —
  watchOS  unspecified –  —
  watchOS  unspecified –  —
  watchOS  unspecified –  —

TIMELINE
  Apr 13  Reserved by apple
  Aug 24  Published (CNA: apple)
  Aug 25  Added to CISA KEV, remediation due 2022-09-15

CWE-502 · CNA: apple · CVSS v3.1 · 6 references · KEV due September 15, 2022

Description

A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release..

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 13, 2021	Reserved	Reserved by apple
August 24, 2021	Published	Published (CNA: apple)
August 25, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-09-15

Affected

Affected products and packages — 5 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Apple	macOS	—	unspecified	—
Apple	macOS	—	unspecified	—
Apple	watchOS	—	unspecified	—
Apple	watchOS	—	unspecified	—
Apple	watchOS	—	unspecified	—

Weaknesses

CWE-502

References (6)

https://support.apple.com/en-us/HT212804 [x_refsource_MISC]
https://support.apple.com/en-us/HT212805 [x_refsource_MISC]
https://support.apple.com/en-us/HT212806 [x_refsource_MISC]
https://support.apple.com/en-us/HT212807 [x_refsource_MISC]
https://support.apple.com/en-us/HT212824 [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31010 [government-resource]

Authoritative record: CVE-2021-31010 at cve.org

Vendors: apple

Weaknesses: CWE-502

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-31010 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.