HdrHistogram up to 2.2.2 AbstractHistogram.java numberOfSignificantValueDigits memory allocation ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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3.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in HdrHistogram up to 2.2.2. This vulnerability affects the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. Such manipulation of the argument numberOfSignificantValueDigits leads to memory allocation. This vulnerability is referenced as CVE-2026-14684. The attack can only be performed from a local environment. Furthermore, an exploit is available. The existence of this vulnerability is still disputed at present. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack.

Detailsinfo

A vulnerability was found in HdrHistogram up to 2.2.2. It has been rated as problematic. Affected by this issue is the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. The manipulation of the argument numberOfSignificantValueDigits with an unknown input leads to a memory allocation vulnerability. Using CWE to declare the problem leads to CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. Impacted is availability.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-14684. The exploitation is known to be easy. The attack needs to be approached locally. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack. The vulnerability scanner Nessus provides a plugin with the ID 325345 (Linux Distros Unpatched Vulnerability : CVE-2026-14684), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (325345). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.1

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 325345
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-14684

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/04/2026 Advisory disclosed
07/04/2026 +0 days VulDB entry created
07/18/2026 +14 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 220
Status: Not defined
Disputed: 🔍

CVE: CVE-2026-14684 (🔒)
GCVE (CVE): GCVE-0-2026-14684
GCVE (VulDB): GCVE-100-376280
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/04/2026 06:45
Updated: 07/18/2026 05:41
Changes: 07/04/2026 06:45 (57), 07/07/2026 13:36 (2), 07/16/2026 09:21 (2), 07/16/2026 09:22 (2), 07/18/2026 05:41 (31)
Complete: 🔍
Submitter: sara11h
Cache ID: 216::103

Submitinfo

Accepted

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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