CVE-2026-14684
Description
A flaw was found in HdrHistogram. A local attacker can exploit a vulnerability in the decodeFromByteBuffer function by manipulating the numberOfSignificantValueDigits argument. This manipulation leads to uncontrolled memory allocation, which can result in a Denial of Service (DoS) condition, making the affected system or application unavailable.
Statement
Successful exploitation requires local access, as an attacker must be able to supply specially crafted, manipulated input directly to an application that is actively utilizing the affected HdrHistogram library. The vulnerability is strictly limited to causing a Denial of Service (DoS) via uncontrolled memory allocation. It does not allow an attacker to execute arbitrary code, escalate privileges, or access unauthorized data. Furthermore, the impact is localized to the specific application processing the malicious input, rather than causing a broader, system-wide compromise.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5 | N/A | 3.3 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | Required | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RC:R
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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