CVE-2022-43603Network attack vector

Application crash via uninitialized Zfile tile buffer

Published Dec 23, 2022 · Updated Apr 14, 2025

NULL pointer dereference in OpenImageIO 2.4.4.2 allows remote attackers to crash image-processing applications via a crafted input file. ZfileOutput::open can reject an invalid tiled specification before allocating m_tilebuffer, but close still passes the empty buffer to write_scanlines and dereferences its null data pointer in release builds. Exploitation requires attacker-controlled image data or specification to be used for Zfile output; the resulting process crash interrupts the consuming application.

CVSS severity5.9
Medium
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in OpenImageIO 2.4.4.2 allows remote attackers to crash image-processing applications via a crafted input file. ZfileOutput::open can reject an invalid tiled specification before allocating m_tilebuffer, but close still passes the empty buffer to write_scanlines and dereferences its null data pointer in release builds. Exploitation requires attacker-controlled image data or specification to be used for Zfile output; the resulting process crash interrupts the consuming application.

The record

CVE
CVE-2022-43603
Published
Dec 23, 2022
Updated
Apr 14, 2025
Vendor
Academy Software Foundation
Product
OpenImageIO
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 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=v2.4.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Academy Software Foundation · OpenImageIOversion=v2.4.4.2

Published CVSS scores

5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
5.9Cisco TalosCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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