CVE-2022-22666Public exploit

Heap corruption via oversized codec parameter sets

Published Mar 18, 2022 · Updated Aug 3, 2024

Memory corruption in AppleAVD in iOS, iPadOS, and tvOS before 15.4 and watchOS before 8.5 allows attackers to corrupt the heap via a crafted image. CreateHeaderBuffer advances its destination pointer while copying oversized VPS, PPS, and SPS data, then can free the advanced pointer instead of the allocation base. Processing the crafted image requires user interaction, and the published proof of concept demonstrates heap corruption rather than code execution.

CVSS severity7.8
High
EPSS probability1.29%
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 AppleAVD in iOS, iPadOS, and tvOS before 15.4 and watchOS before 8.5 allows attackers to corrupt the heap via a crafted image. CreateHeaderBuffer advances its destination pointer while copying oversized VPS, PPS, and SPS data, then can free the advanced pointer instead of the allocation base. Processing the crafted image requires user interaction, and the published proof of concept demonstrates heap corruption rather than code execution.

The record

CVE
CVE-2022-22666
Published
Mar 18, 2022
Updated
Aug 3, 2024
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-787, T1203
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 · tvOSversion=unspecified <15.4
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
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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