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CVE-2026-14684— HdrHistogram AbstractHistogram.java memory allocation

Quick assessment

Affected
n/a HdrHistogram
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.

HdrHistogram HdrHistogram是HdrHistogram组织的一款记录高动态范围直方图数据的性能监控工具库。 HdrHistogram 2.2.2及之前版本存在资源管理错误漏洞，该漏洞源于对参数numberOfSignificantValueDigits的操作导致不受控制的内存分配，攻击者可利用该漏洞在本地执行攻击。

CVSS 3.3 · Low EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 3

VendorProduct Version RangeStatus
n/a HdrHistogram 2.2.0 affected
2.2.1 affected
2.2.2 affected
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I. Basic Information for CVE-2026-14684

Vulnerability Information
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Vulnerability Title
HdrHistogram AbstractHistogram.java memory allocation
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in HdrHistogram up to 2.2.2. This affects the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. This manipulation of the argument numberOfSignificantValueDigits causes uncontrolled memory allocation. The attack can only be executed locally. The exploit has been published and may be used. The actual existence of this vulnerability is currently in question. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
HdrHistogram 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HdrHistogram HdrHistogram是HdrHistogram组织的一款记录高动态范围直方图数据的性能监控工具库。 HdrHistogram 2.2.2及之前版本存在资源管理错误漏洞，该漏洞源于对参数numberOfSignificantValueDigits的操作导致不受控制的内存分配，攻击者可利用该漏洞在本地执行攻击。
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
- HdrHistogram 2.2.0 cpe:2.3:a:hdrhistogram:hdrhistogram:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-14684

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III. Intelligence Information for CVE-2026-14684

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Other References for CVE-2026-14684 (1)

Same Patch Batch · n/a · 2026-07-04 · 6 CVEs total

CVE-2026-14647 4.3 MEDIUM onnx onnxruntime old.cc convPoolShapeInference_opset19 out-of-bounds
CVE-2026-14629 4.3 MEDIUM RT-Thread Parameter lwp_syscall.c sys_ioctl divide by zero
CVE-2026-14618 4.3 MEDIUM Open5GS AMF nnrf-handler.c amf_nnrf_handle_nf_discover denial of service
CVE-2026-14685 3.3 LOW HdrHistogram AbstractHistogram AbstractHistogram.java recordValueWithCount state issue
CVE-2026-14683 3.3 LOW HdrHistogram AbstractHistogram.java memory allocation

IV. Related Vulnerabilities

Same product: HdrHistogram
Same vendor: n/a
Same weakness: CWE-789

V. Comments for CVE-2026-14684

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