CVE-2023-32437

Sandbox escape via NSURLSession file handling

Published Jul 26, 2023 · Updated Feb 13, 2025

Sandbox escape in NSURLSession in Apple iOS and iPadOS before 16.6 allows attackers to escape an app sandbox via file handling. Apple has not disclosed which NSURLSession file-handling operation improperly crosses the sandbox boundary. Exploitation requires a user to run an affected app, after which the app can access resources outside its assigned sandbox.

CVSS severity8.6
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox escape in NSURLSession in Apple iOS and iPadOS before 16.6 allows attackers to escape an app sandbox via file handling. Apple has not disclosed which NSURLSession file-handling operation improperly crosses the sandbox boundary. Exploitation requires a user to run an affected app, after which the app can access resources outside its assigned sandbox.

The record

CVE
CVE-2023-32437
Published
Jul 26, 2023
Updated
Feb 13, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
T1404
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=unspecified <16.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <16.6

Published CVSS scores

8.6NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1404Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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