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CVE-2025-64182— OpenEXR has buffer overflow in PyOpenEXR_old's channels() and channel()

Quick assessment

Affected
AcademySoftwareFoundation openexr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenEXR是Academy Software Foundation开源的一种高动态范围图像（HDR）文件格式的开放标准。 OpenEXR 3.2.0版本至3.2.4版本、3.3.0版本至3.3.5版本和3.4.0版本至3.4.2版本存在安全漏洞，该漏洞源于OpenEXR Python适配器中存在内存安全问题，可能导致堆溢出或空指针取消引用。

AI Predicted 7.5 Difficulty: Easy EPSS 0.24% · P16

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-64182

Vulnerability Information
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Vulnerability Title
OpenEXR has buffer overflow in PyOpenEXR_old's channels() and channel()
Source: CVE Program / CVE List V5
Vulnerability Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.2.0 through 3.2.4, 3.3.0 through 3.3.5, and 3.4.0 through 3.4.2, a memory safety bug in the legacy OpenEXR Python adapter (the deprecated OpenEXR.InputFile wrapper) allow crashes and likely code execution when opening attacker-controlled EXR files or when passing crafted Python objects. Integer overflow and unchecked allocation in InputFile.channel() and InputFile.channels() can lead to heap overflow (32 bit) or a NULL deref (64 bit). Versions 3.2.5, 3.3.6, and 3.4.3 contain a patch for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenEXR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenEXR是Academy Software Foundation开源的一种高动态范围图像（HDR）文件格式的开放标准。 OpenEXR 3.2.0版本至3.2.4版本、3.3.0版本至3.3.5版本和3.4.0版本至3.4.2版本存在安全漏洞，该漏洞源于OpenEXR Python适配器中存在内存安全问题，可能导致堆溢出或空指针取消引用。
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 >= 3.2.0, < 3.2.5 -

II. Public POCs for CVE-2025-64182

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III. Intelligence Information for CVE-2025-64182

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Same Patch Batch · AcademySoftwareFoundation · 2025-11-10 · 3 CVEs total

CVE-2025-64183 OpenEXR has use after free in PyObject_StealAttrString
CVE-2025-64181 OpenEXR Makes Use of Uninitialized Memory

IV. Related Vulnerabilities

Same product: openexr
Same vendor: AcademySoftwareFoundation
Same weakness: CWE-120

V. Comments for CVE-2025-64182

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