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CVE-2026-29043— HDF5 H5T__ref_mem_setnull Heap Buffer Overflow

Quick assessment

Affected
HDFGroup 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.

HDF5是HDF开源的一个库。 HDF5 1.14.1-2及之前版本存在安全漏洞，该漏洞源于H5T__ref_mem_setnull方法存在堆缓冲区溢出，可能导致拒绝服务或远程代码执行。

CVSS 5.5 · Medium EPSS 0.20% · P9
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I. Basic Information for CVE-2026-29043

Vulnerability Information
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Vulnerability Title
HDF5 H5T__ref_mem_setnull Heap Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
HDF5 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HDF5是HDF开源的一个库。 HDF5 1.14.1-2及之前版本存在安全漏洞，该漏洞源于H5T__ref_mem_setnull方法存在堆缓冲区溢出，可能导致拒绝服务或远程代码执行。
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
HDFGroup hdf5 <= 1.14.1-2 -

II. Public POCs for CVE-2026-29043

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III. Intelligence Information for CVE-2026-29043

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Vendor Advisories for CVE-2026-29043 (1)

IV. Related Vulnerabilities

Same product: hdf5
Same vendor: HDFGroup
Same weakness: CWE-122

V. Comments for CVE-2026-29043

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