Crash via wrapped TGA palette bounds check
Published May 14, 2026 · Updated May 14, 2026
Out-of-bounds read in affected OpenImageIO releases allows attackers to crash image-processing tools via a crafted paletted TGA file. The TGAInput::decode_pixel bounds check adds palbytespp to a 32-bit palette offset before widening it, so the addition wraps to zero and lets an approximately 4 GB out-of-bounds palette index pass. Processing the malicious file is required, and the demonstrated consequence is an unconditional process crash rather than data disclosure or modification.
Summary
What happened
Out-of-bounds read in affected OpenImageIO releases allows attackers to crash image-processing tools via a crafted paletted TGA file. The TGAInput::decode_pixel bounds check adds palbytespp to a 32-bit palette offset before widening it, so the addition wraps to zero and lets an approximately 4 GB out-of-bounds palette index pass. Processing the malicious file is required, and the demonstrated consequence is an unconditional process crash rather than data disclosure or modification.
The record
- CVE
- CVE-2026-43996
- Published
- May 14, 2026
- Updated
- May 14, 2026
- Vendor
- Academy Software Foundation
- Product
- OpenImageIO
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- 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.
Public exploit references
- poc_tga_palette_ovf.tgaproof of concept · demonstrated
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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