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CVE-2026-59187— OpenEXR: exrmetrics deep pixelmode heap buffer overflow

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.

OpenEXR 是 EXR 图像格式的参考实现和标准规范，在电影工业中广泛应用。OpenEXR 版本 3.3.0 至 3.3.12 以及 3.4.0 至 3.4.13 存在漏洞，当 exrmetrics 工具读取精心构造的深度扫描线 EXR 文件时，会发生堆缓冲区越界写入错误。该问题出现在使用像素转换选项（如 --pixelmode float 或 --bench）时，因为 DeepSlice 请求输出 FLOAT 类型的数据，而实际分配的样本缓冲区却是按照输入数据的 HALF 元素大小进行的。此问题已在版本 3.

CVSS 7.1 · High

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 2

VendorProduct Version RangeStatus
AcademySoftwareFoundation openexr >= 3.3.0, < 3.3.13 affected
>= 3.4.0, < 3.4.14 affected
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I. Basic Information for CVE-2026-59187

Vulnerability Information
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Vulnerability Title
OpenEXR: exrmetrics deep pixelmode heap buffer overflow
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. OpenEXR versions 3.3.0 through 3.3.12 and 3.4.0 through 3.4.13 are vulnerable to a heap out-of-bounds write when exrmetrics reads a crafted deep scanline EXR. This occurs with pixel conversion options such as --pixelmode float or --bench because DeepSlice requests FLOAT output while the backing sample buffers are allocated using the input HALF element size. The issue is fixed in versions 3.3.13 and 3.4.14.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AcademySoftwareFoundation openexr >= 3.3.0, < 3.3.13 -

II. Public POCs for CVE-2026-59187

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8291 chars
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III. Intelligence Information for CVE-2026-59187

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Patches & Fixes for CVE-2026-59187 (2)

Vendor Advisories for CVE-2026-59187 (1)

Same Patch Batch · AcademySoftwareFoundation · 2026-08-25 · 20 CVEs total

CVE-2026-59981 7.1 HIGH OpenEXR: Heap OOB read in SampleCountChannel row when using nonzero dataWindow
CVE-2026-59184 7.1 HIGH OpenEXR: OpenEXRUtil FlatImageChannel row nonzero dataWindow heap OOB write
CVE-2026-59186 7.1 HIGH OpenEXR: Heap out-of-bounds write in TiledRgbaInputFile via integer overflow on 32-bit (IL
CVE-2026-59189 7.1 HIGH OpenEXR: Out-of-bounds read in DeepImageChannel::row() for non-zero dataWindow origin
CVE-2026-59982 7.1 HIGH OpenEXR: DWAA InputFile AC buffer overflow on ILP32 platforms
CVE-2026-68515 7.1 HIGH OpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel union
CVE-2026-68513 7.1 HIGH OpenEXR: Heap buffer overflow in PyOpenEXR from literal/prefixed RGB channel name collisio
CVE-2026-55371 6.9 MEDIUM OpenEXR: OpenEXRCore exr_attr_set_bytes() accepts NULL type_hint with positive hint_length
CVE-2026-65979 6.7 MEDIUM OpenEXR: Out-of-bounds read in HTJ2K decoder from unvalidated chunk header length (PLEN)
CVE-2026-55373 6.2 MEDIUM OpenEXR: OpenEXRUtil SampleCountChannel endEdit() can loop forever on UINT_MAX sample coun
CVE-2026-55059 6.1 MEDIUM OpenEXR: OpenEXRUtil SampleCountChannel row setter heap has an out-of-bounds write vulnera
CVE-2026-59984 5.5 MEDIUM OpenEXR: Scratch buffer overflow decoding B44-compressed InputFile on ILP32
CVE-2026-68514 5.5 MEDIUM OpenEXR: Heap buffer overflow in PyOpenEXR from literal/prefixed RGB channel name collisio
CVE-2026-61555 5.5 MEDIUM OpenEXR: Empty multiView viewFromChannelName file crash
CVE-2026-59985 5.5 MEDIUM OpenEXR: Heap out-of-bounds read in OpenEXRCore RLE decoding on ILP32
CVE-2026-59983 5.5 MEDIUM OpenEXR: Out-of-bounds read in DeepTiledInputFile sample-count table decode on ILP32
CVE-2026-59183 5.5 MEDIUM OpenEXR: Signed Integer Overflow Leading to Out-of-Bounds Memory Access in Deep Tile Decod
CVE-2026-62986 4.3 MEDIUM OpenEXR: PyOpenEXR deep prefixed RGB stale lane disclosure
CVE-2026-54920 OpenEXR: Integer overflow and uninitialized pointer cause invalid delete in OpenEXRUtil im

IV. Related Vulnerabilities

Same product: openexr
Same vendor: AcademySoftwareFoundation
Same weakness: CWE-122

V. Comments for CVE-2026-59187

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