CVE-2026-42216— OpenEXR: Out-of-bounds read in `IDManifest::init()` during prefix expansion
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I. Basic Information for CVE-2026-42216
Vulnerability Information
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Vulnerability Title
OpenEXR: Out-of-bounds read in `IDManifest::init()` during prefix expansion
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, IDManifest::init() reconstructs strings from a prefix-compressed representation. If the previous string is longer than 255 bytes, the next string is expected to begin with a 2-byte prefix length. The code reads stringList[i][0] and stringList[i][1] without checking that the current string has at least two bytes. 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
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenEXR 缓冲区错误漏洞
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之前版本存在缓冲区错误漏洞，该漏洞源于IDManifest::init()重构前缀压缩字符串时未检查当前字符串至少有两个字节，可能导致越界读取。
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-2026-42216
| # | POC Description | Source Link | Shenlong Link |
|---|
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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-2026-42217 | OpenEXR: Shift exponent overflow in `readVariableLengthInteger()` (`ImfIDManifest.cpp`) |
IV. Related Vulnerabilities
Same product: openexr
- CVE-2026-42217
OpenEXR: Shift exponent overflow in `readVariableLengthInteg - 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-2026-42217
OpenEXR: Shift exponent overflow in `readVariableLengthInteg - 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-125
- CVE-2026-8177
XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2026-42216
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