CVE-2021-30871Public exploit

Analytics data disclosure via missing entitlement check

Published Aug 24, 2021 · Updated Aug 3, 2024

Information disclosure in Apple iOS before 14.7 and macOS Big Sur before 11.5 allows local users to read analytics data. The Analytics component allowed a user-installed application to read shared analytics logs without checking a dedicated entitlement. Execution of a local application is required; the exposed logs can contain medical, device-usage, accessory, crash, and browsed-language data.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Apple iOS before 14.7 and macOS Big Sur before 11.5 allows local users to read analytics data. The Analytics component allowed a user-installed application to read shared analytics logs without checking a dedicated entitlement. Execution of a local application is required; the exposed logs can contain medical, device-usage, accessory, crash, and browsed-language data.

The record

CVE
CVE-2021-30871
Published
Aug 24, 2021
Updated
Aug 3, 2024
Vendor
Apple
Product
iOS
Classifications
T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <14.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Apple · iOSversion=unspecified <14.7
Apple · macOSversion=unspecified <11.5; version=unspecified <7.6

Published CVSS scores

2.1NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo