Process crash via DPX buffer-size integer overflow
Published May 14, 2026 · Updated May 14, 2026
Heap out-of-bounds write in OpenImageIO before 3.0.18.0 and 3.1.4.0-beta through 3.1.12.0 allows attackers to corrupt memory via a crafted DPX file. QueryRGBBufferSizeInternal() multiplies attacker-controlled pixel counts by negative channel widths in signed 32-bit arithmetic, so overflow turns the no-buffer sentinel positive and dpxinput.cpp allocates too little memory before fread writes the full image. Exploitation requires an application to read pixel data from the file and results in a process crash or arbitrary code execution through heap corruption.
Summary
What happened
Heap out-of-bounds write in OpenImageIO before 3.0.18.0 and 3.1.4.0-beta through 3.1.12.0 allows attackers to corrupt memory via a crafted DPX file. QueryRGBBufferSizeInternal() multiplies attacker-controlled pixel counts by negative channel widths in signed 32-bit arithmetic, so overflow turns the no-buffer sentinel positive and dpxinput.cpp allocates too little memory before fread writes the full image. Exploitation requires an application to read pixel data from the file and results in a process crash or arbitrary code execution through heap corruption.
The record
- CVE
- CVE-2026-43907
- Published
- May 14, 2026
- Updated
- May 14, 2026
- Vendor
- Academy Software Foundation
- Product
- OpenImageIO
- Classifications
- CWE-190, CWE-787, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 14, 2026CVE publishedPublication date reported by the CVE source.
- May 14, 2026Record 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.
- Affected versionversion=< 3.0.18.0
- Affected versionversion=>= 3.1.4.0-beta, < 3.1.13.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- poc_dpx_abgr_oob.dpxproof of concept · demonstrated
- poc_dpx_cbycr_oob.dpxproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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