CVE-2022-22633

Code execution via crafted PDF state corruption

Published Mar 18, 2022 · Updated Aug 3, 2024

Memory corruption in iOS before 15.4, watchOS before 8.5, and affected macOS releases allows attackers to execute code via a crafted PDF. The flaw is in Accelerate Framework, but Apple has not disclosed which PDF-processing routine mishandles state or how the corruption occurs. Exploitation requires a user to open the file; successful corruption can crash the application or execute code in its context.

CVSS severity7.8
High
EPSS probability1.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in iOS before 15.4, watchOS before 8.5, and affected macOS releases allows attackers to execute code via a crafted PDF. The flaw is in Accelerate Framework, but Apple has not disclosed which PDF-processing routine mishandles state or how the corruption occurs. Exploitation requires a user to open the file; successful corruption can crash the application or execute code in its context.

The record

CVE
CVE-2022-22633
Published
Mar 18, 2022
Updated
Aug 3, 2024
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-787, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2022CVE 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

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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 <15.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <15.4
Apple · macOSversion=unspecified <11.6; version=unspecified <12.3
Apple · watchOSversion=unspecified <8.5

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File

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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