CVE-2024-27801Public exploit

Local privilege escalation via NSXPC use-after-free

Published Jun 10, 2024 · Updated Apr 2, 2026

Use-after-free in Foundation on affected Apple operating systems allows local users to elevate privileges through a malicious app and NSXPC. The low-level NSXPC implementation accesses freed memory while decoding crafted XPC messages containing serialized object data. Local app execution is required; the published proof of concept targets system XPC services, and CertiK demonstrated access to third-party app data.

CVSS severity7.8
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Foundation on affected Apple operating systems allows local users to elevate privileges through a malicious app and NSXPC. The low-level NSXPC implementation accesses freed memory while decoding crafted XPC messages containing serialized object data. Local app execution is required; the published proof of concept targets system XPC services, and CertiK demonstrated access to third-party app data.

The record

CVE
CVE-2024-27801
Published
Jun 10, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS
Classifications
T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <17.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOSversion=0 <17.5
Apple · iOS and iPadOSversion=0 <17.5
Apple · visionOSversion=0 <1.2
Apple · tvOSversion=0 <17.5
Apple · macOSversion=0 <14.5
Apple · iPadOSversion=0 <17.5
Apple · watchOSversion=0 <10.5

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

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

Technologies

Your stack

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Your stack

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