CVE-2026-54920Public exploit

Process crash via uninitialized pointer cleanup

Published Aug 25, 2026 · Updated Aug 25, 2026

Denial of service in OpenEXR allows local users to crash applications by passing extreme coordinates to OpenEXRUtil Image::resize(). Signed int dimension arithmetic overflows in Image::resize(), and exception cleanup calls clearLevels() on an Array2D whose ImageLevel pointer slots were not value-initialized, causing invalid deletion. The confirmed path requires a local caller or embedding application to supply an untrusted Box2i data window; direct triggering through ordinary EXR file loading and code execution are not established.

CVSS severity0.0
None
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in OpenEXR allows local users to crash applications by passing extreme coordinates to OpenEXRUtil Image::resize(). Signed int dimension arithmetic overflows in Image::resize(), and exception cleanup calls clearLevels() on an Array2D whose ImageLevel pointer slots were not value-initialized, causing invalid deletion. The confirmed path requires a local caller or embedding application to supply an untrusted Box2i data window; direct triggering through ordinary EXR file loading and code execution are not established.

The record

CVE
CVE-2026-54920
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
Academy Software Foundation
Product
OpenEXR
Classifications
CWE-824, CWE-190
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 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=< 3.2.10
  2. Affected versionversion=>= 3.3.0, <= 3.3.12
  3. Affected versionversion=>= 3.4.0, <= 3.4.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Academy Software Foundation · OpenEXRversion=< 3.2.10; version=>= 3.3.0, <= 3.3.12; version=>= 3.4.0, <= 3.4.13

Published CVSS scores

0.0GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
CWE-190Integer Overflow or Wraparound

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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