CVE-2026-42217— OpenEXR: Shift exponent overflow in `readVariableLengthInteger()` (`ImfIDManifest.cpp`)
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I. Basic Information for CVE-2026-42217
Vulnerability Information
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Vulnerability Title
OpenEXR: Shift exponent overflow in `readVariableLengthInteger()` (`ImfIDManifest.cpp`)
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenEXR 输入验证错误漏洞
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 3.0.0版本至3.2.9之前版本、3.3.0版本至3.3.11之前版本和3.4.0版本至3.4.11之前版本存在输入验证错误漏洞，该漏洞源于readVariableLengthInteger()解码可变长度整数时未限制移位计数，可能导致未定义行为。
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 | >= 3.0.0, < 3.2.9 | - |
II. Public POCs for CVE-2026-42217
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|---|
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Same Patch Batch · AcademySoftwareFoundation · 2026-05-07 · 3 CVEs total
| CVE-2026-41142 | 8.8 HIGH | OpenEXR is Vulnerable to Integer overflow in ImageChannel::resize leads to heap OOB write |
| CVE-2026-42216 | OpenEXR: Out-of-bounds read in `IDManifest::init()` during prefix expansion |
IV. Related Vulnerabilities
Same product: openexr
- CVE-2026-42216
OpenEXR: Out-of-bounds read in `IDManifest::init()` during p - CVE-2026-41142
OpenEXR is Vulnerable to Integer overflow in ImageChannel::r - CVE-2026-40250
OpenEXR has integer overflow in DWA decoder outBufferEnd poi - CVE-2026-40244
OpenEXR has integer overflow in DWA setupChannelData planarU - CVE-2026-39886
OpenEXR has HTJ2K Signed Integer Overflow in ht_undo_impl()
Same vendor: AcademySoftwareFoundation
- CVE-2026-42216
OpenEXR: Out-of-bounds read in `IDManifest::init()` during p - CVE-2026-41142
OpenEXR is Vulnerable to Integer overflow in ImageChannel::r - CVE-2026-7582
AcademySoftwareFoundation OpenImageIO DDS Image ddsinput.cpp - CVE-2026-40250
OpenEXR has integer overflow in DWA decoder outBufferEnd poi - CVE-2026-40244
OpenEXR has integer overflow in DWA setupChannelData planarU
Same weakness: CWE-190
- CVE-2026-7568
Signed integer overflow in metaphone() - CVE-2026-42311
Pillow: OOB Write with Invalid PSD Tile Extents (Integer Ove - CVE-2026-42308
Pillow: Integer overflow when processing fonts - CVE-2026-6664
PgBouncer integer overflow in PgBouncer network packet parsi - CVE-2026-42199
Grid: Integer Overflow in Grid::expand_rows Leads to Safe-AP
V. Comments for CVE-2026-42217
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