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CVE-2026-53532— OpenEXR: Unhandled assert abort in HTJ2K decoder via crafted QCD marker (DoS)

Quick assessment

Affected
AcademySoftwareFoundation openexr
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Academy Software Foundation OpenEXR是美国Academy Software Foundation基金会开源的一种高动态范围图像(HDR)文件格式的开放标准。 Academy Software Foundation OpenEXR 3.4.0至3.4.13之前版本存在异常处理不当漏洞，该漏洞源于QCD标记低五位为零时，OpenEXR将其传递给OpenJPH库，OpenJPH使用断言验证非法值并直接调用abort()，可能导致任何调用exr_start_read()处理不可信

CVSS 7.1 · High EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
AcademySoftwareFoundation openexr >= 3.4.0, < 3.4.13 affected
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I. Basic Information for CVE-2026-53532

Vulnerability Information
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Vulnerability Title
OpenEXR: Unhandled assert abort in HTJ2K decoder via crafted QCD marker (DoS)
Source: CVE Program / CVE List V5
Vulnerability Description
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.12, a crafted HTJ2K-compressed EXR file causes an unconditional process abort in any application that calls exr_start_read() on untrusted input, resulting in denial of service. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library while constructing the codestream and evaluating its quantization delta parameters. OpenJPH uses an assertion rather than a recoverable error to validate those bits, so any invalid value calls abort() directly and cannot be intercepted by surrounding error handling, a problem compounded by OpenEXR wrapping only its internal HT header parser in error handling while leaving the later codestream read and construction calls unprotected. This issue has been resolved in version 3.4.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
Academy Software Foundation OpenEXR 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Academy Software Foundation OpenEXR是美国Academy Software Foundation基金会开源的一种高动态范围图像(HDR)文件格式的开放标准。 Academy Software Foundation OpenEXR 3.4.0至3.4.13之前版本存在异常处理不当漏洞，该漏洞源于QCD标记低五位为零时，OpenEXR将其传递给OpenJPH库，OpenJPH使用断言验证非法值并直接调用abort()，可能导致任何调用exr_start_read()处理不可信
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AcademySoftwareFoundation openexr >= 3.4.0, < 3.4.13 -

II. Public POCs for CVE-2026-53532

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9611 chars
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III. Intelligence Information for CVE-2026-53532

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Patches & Fixes for CVE-2026-53532 (1)

Vendor Advisories for CVE-2026-53532 (1)

IV. Related Vulnerabilities

Same product: openexr
Same vendor: AcademySoftwareFoundation
Same weakness: CWE-617

V. Comments for CVE-2026-53532

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