CVE-2026-92627— Heap Use-After-Free in H5T__conv_f_f
Quick assessment
Affected
The HDF Group HDF5
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.
在 HDF5 2.3.0 之前的版本中， 文件中的 函数存在堆内存使用后的释放（heap-use-after-free）漏洞。在读取数据集时，如果正在转换包含浮点成员的复合数据类型，一个通过 分配的临时缓冲区在释放之后，仍然会在同一转换例程中被读取。攻击者若能提供一个精心构造的 HDF5 文件，其中包含一个特别设计的复合数据类型，当应用程序（如 ）解析该文件并读取受影响的数据集时，即可触发该释放后使用（use-after-free）漏洞。这可能导致程序崩溃，并且根据堆内存布局和分配器的行为不同，还可能进一步导致内存
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-92627
Vulnerability Information
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Vulnerability Title
Heap Use-After-Free in H5T__conv_f_f
Source: CVE Program / CVE List V5
Vulnerability Description
A heap-use-after-free vulnerability exists in H5T__conv_f_f() in src/H5Tconv.c in HDF5 before 1.14.2. When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc() is freed and subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as h5dump. This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| The HDF Group | HDF5 | < 1.14.2 | - |
|
II. Public POCs for CVE-2026-92627
| # | POC Description | Source Link | Shenlong Link |
|---|
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V. Comments for CVE-2026-92627
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