CVE-2026-14686Public exploit

Data corruption via NaN range-check bypass

Published Jul 5, 2026 · Updated Jul 5, 2026

Incorrect comparison in HdrHistogram 2.2.0 through 2.2.2 allows local users to corrupt histogram statistics by recording NaN. DoubleHistogram.recordValue compares NaN only with range bounds; both tests evaluate false, and its later long conversion records a zero-bucket value. The caller must already be able to supply values to the local library API, and upstream disputes that this behavior crosses a security boundary.

CVSS severityUnavailable
Unscored
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Incorrect comparison in HdrHistogram 2.2.0 through 2.2.2 allows local users to corrupt histogram statistics by recording NaN. DoubleHistogram.recordValue compares NaN only with range bounds; both tests evaluate false, and its later long conversion records a zero-bucket value. The caller must already be able to supply values to the local library API, and upstream disputes that this behavior crosses a security boundary.

The record

CVE
CVE-2026-14686
Published
Jul 5, 2026
Updated
Jul 5, 2026
Vendor
HdrHistogram
Product
HdrHistogram
Classifications
CWE-697, T1565
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.2.0
  2. Affected versionversion=2.2.1
  3. Affected versionversion=2.2.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

HdrHistogram · HdrHistogramversion=2.2.0; version=2.2.1; version=2.2.2

Published CVSS scores

4.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
1.7VulDBAV:L/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
3.3VulDBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-697Incorrect Comparison
T1565Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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