CVE-2022-43594Network attack vector

Unauthenticated denial of service via BMP close recursion

Published Dec 23, 2022 · Updated Feb 13, 2025

NULL pointer dereference in OpenImageIO 2.4.4.2 allows remote attackers to cause service interruption via crafted BMP output inputs. BmpOutput::close() can recurse through write_scanline when tiled output has a scanline index beyond the image height, exhausting the stack and crashing the process. Exploitation requires control of the input image or output specification reaching BMP writing; impact is denial of service only.

CVSS severity5.9
Medium
EPSS probability1.27%
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 cause service interruption via crafted BMP output inputs. BmpOutput::close() can recurse through write_scanline when tiled output has a scanline index beyond the image height, exhausting the stack and crashing the process. Exploitation requires control of the input image or output specification reaching BMP writing; impact is denial of service only.

The record

CVE
CVE-2022-43594
Published
Dec 23, 2022
Updated
Feb 13, 2025
Vendor
Academy Software Foundation
Product
OpenImageIO
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2022CVE 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=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

5.9Cisco TalosCVSS:3.1/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

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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
T1499Endpoint Denial of Service

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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