CVE-2026-41142Public exploitNetwork attack vector

Memory corruption via truncated image pixel count

Published May 7, 2026 · Updated May 7, 2026

Heap out-of-bounds write in Academy Software Foundation OpenEXR allows remote attackers to corrupt memory through a crafted EXR file. ImageChannel::resize multiplies signed row and column counts before widening the result to size_t, so the wrapped count allocates too few elements while later writes retain the original row stride. Affected releases are 3.0.0 through 3.2.8, 3.3.0 through 3.3.10, and 3.4.0 through 3.4.10; exploitation requires an application to ingest an untrusted EXR through OpenEXRUtil.

CVSS severity8.8
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap out-of-bounds write in Academy Software Foundation OpenEXR allows remote attackers to corrupt memory through a crafted EXR file. ImageChannel::resize multiplies signed row and column counts before widening the result to size_t, so the wrapped count allocates too few elements while later writes retain the original row stride. Affected releases are 3.0.0 through 3.2.8, 3.3.0 through 3.3.10, and 3.4.0 through 3.4.10; exploitation requires an application to ingest an untrusted EXR through OpenEXRUtil.

The record

CVE
CVE-2026-41142
Published
May 7, 2026
Updated
May 7, 2026
Vendor
Academy Software Foundation
Product
OpenEXR
Classifications
CWE-190, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2026CVE publishedPublication date reported by the CVE source.
  2. May 7, 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.

  1. Affected versionversion=>= 3.0.0, < 3.2.9
  2. Affected versionversion=>= 3.3.0, < 3.3.11
  3. Affected versionversion=>= 3.4.0, < 3.4.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Academy Software Foundation · OpenEXRversion=>= 3.0.0, < 3.2.9; version=>= 3.3.0, < 3.3.11; version=>= 3.4.0, < 3.4.11

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1203Exploitation for Client Execution

Public exploit references

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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