CVE-2026-53532Public exploitNetwork attack vector

Application abort via crafted HTJ2K QCD marker

Published Aug 24, 2026 · Updated Aug 24, 2026

Reachable assertion in OpenEXR 3.4.0 through 3.4.12 allows attackers to abort an image-processing application via a crafted EXR file. During HTJ2K decoding, ht_undo_impl() passes a QCD marker with zero lower five bits to OpenJPH param_qcd::get_irrev_delta(), whose assertion calls abort() instead of returning a recoverable error. An application must open attacker-supplied HTJ2K input; the result is a process crash without memory corruption, information disclosure, or code execution.

CVSS severity6.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in OpenEXR 3.4.0 through 3.4.12 allows attackers to abort an image-processing application via a crafted EXR file. During HTJ2K decoding, ht_undo_impl() passes a QCD marker with zero lower five bits to OpenJPH param_qcd::get_irrev_delta(), whose assertion calls abort() instead of returning a recoverable error. An application must open attacker-supplied HTJ2K input; the result is a process crash without memory corruption, information disclosure, or code execution.

The record

CVE
CVE-2026-53532
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
Academy Software Foundation
Product
OpenEXR
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 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=>= 3.4.0, < 3.4.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Academy Software Foundation · OpenEXRversion=>= 3.4.0, < 3.4.13

Published CVSS scores

6.5Academy Software FoundationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499.004Application or System Exploitation

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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