CVE-2022-36041

Code execution via Mach-O page-index bounds error

Published Sep 6, 2022 · Updated Apr 23, 2025

Out-of-bounds write in Rizin Organization Rizin 0.4.0 and earlier allows attackers to execute code via a malicious Mach-O file. The reconstruct_chained_fixup function compares a page index with the page_start buffer's byte size rather than its element count, then writes a 16-bit value beyond the allocation. Exploitation requires a user to open the crafted file, and successful memory corruption grants code execution in that user's context.

CVSS severity7.8
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Rizin Organization Rizin 0.4.0 and earlier allows attackers to execute code via a malicious Mach-O file. The reconstruct_chained_fixup function compares a page index with the page_start buffer's byte size rather than its element count, then writes a 16-bit value beyond the allocation. Exploitation requires a user to open the crafted file, and successful memory corruption grants code execution in that user's context.

The record

CVE
CVE-2022-36041
Published
Sep 6, 2022
Updated
Apr 23, 2025
Vendor
Rizin Organization
Product
Rizin
Classifications
CWE-787, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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=<= 0.4.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Rizin Organization · Rizinversion=<= 0.4.0

Published CVSS scores

7.8GitHub, Inc.CVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File
T1203Exploitation for Client Execution

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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