CVE-2026-55059: CWE-787: Out-of-bounds Write in AcademySoftwareFoundation openexr
OpenEXR versions prior to 3.2.10, 3.3.12, and 3.4.13 contain a heap out-of-bounds write vulnerability in the SampleCountChannel::set function. This occurs because the Y coordinate is incorrectly computed using dataWindow.min.x instead of dataWindow.min.y, leading to potential heap corruption and process crashes when handling deep image data windows where min.x differs from min.y. The issue is reachable via the public DeepImage API and has been fixed in the specified versions.
AI Analysis
Technical Summary
The vulnerability in OpenEXR affects versions before 3.2.10, 3.3.12, and 3.4.13. It is a heap out-of-bounds write in the Imf_4_0::SampleCountChannel::set method, caused by incorrect calculation of the target Y coordinate using dataWindow.min.x instead of dataWindow.min.y. This miscalculation can cause writes before the allocated _numSamples buffer when the data window's min.x and min.y differ, leading to heap corruption and potential process crashes. The flaw is accessible through the public DeepImage API. The issue has been addressed in the fixed versions 3.2.10, 3.3.12, and 3.4.13.
Potential Impact
Exploitation of this vulnerability can lead to heap corruption and process crashes. There is no indication of confidentiality or integrity impact, but availability is affected due to potential crashes. The CVSS score is 6.1 (medium severity), reflecting local attack vector with low complexity, no privileges required, user interaction needed, and impact limited to availability.
Mitigation Recommendations
Upgrade OpenEXR to version 3.2.10, 3.3.12, or 3.4.13 or later to apply the official fix for this vulnerability. No other mitigation or workaround is indicated.
CVE-2026-55059: CWE-787: Out-of-bounds Write in AcademySoftwareFoundation openexr
Description
OpenEXR versions prior to 3.2.10, 3.3.12, and 3.4.13 contain a heap out-of-bounds write vulnerability in the SampleCountChannel::set function. This occurs because the Y coordinate is incorrectly computed using dataWindow.min.x instead of dataWindow.min.y, leading to potential heap corruption and process crashes when handling deep image data windows where min.x differs from min.y. The issue is reachable via the public DeepImage API and has been fixed in the specified versions.
CVSS v3.1
Score 6.1medium
Affected software
pkg:github/academysoftwarefoundation/openexrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in OpenEXR affects versions before 3.2.10, 3.3.12, and 3.4.13. It is a heap out-of-bounds write in the Imf_4_0::SampleCountChannel::set method, caused by incorrect calculation of the target Y coordinate using dataWindow.min.x instead of dataWindow.min.y. This miscalculation can cause writes before the allocated _numSamples buffer when the data window's min.x and min.y differ, leading to heap corruption and potential process crashes. The flaw is accessible through the public DeepImage API. The issue has been addressed in the fixed versions 3.2.10, 3.3.12, and 3.4.13.
Potential Impact
Exploitation of this vulnerability can lead to heap corruption and process crashes. There is no indication of confidentiality or integrity impact, but availability is affected due to potential crashes. The CVSS score is 6.1 (medium severity), reflecting local attack vector with low complexity, no privileges required, user interaction needed, and impact limited to availability.
Mitigation Recommendations
Upgrade OpenEXR to version 3.2.10, 3.3.12, or 3.4.13 or later to apply the official fix for this vulnerability. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-16T14:33:35.709Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8ce3d2acd9273b495f0b8b
Added to database: 08/25/2026, 00:37:38 UTC
Last enriched: 08/25/2026, 00:52:06 UTC
Last updated: 08/25/2026, 01:05:31 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.