CVE-2026-14685Public exploit

Histogram state corruption via negative count acceptance

Published Jul 4, 2026 · Updated Jul 4, 2026

State corruption in HdrHistogram 2.2.0 through 2.2.2 allows local users to alter histogram results via a negative count. AbstractHistogram.recordValueWithCount passes count directly to recordCountAtValue, which adds negative values to bucket and total counters without rejecting them. Reachability requires a calling application to pass attacker-controlled counts; the maintainer disputes that this behavior crosses a security boundary.

CVSS severity3.3
Low
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

State corruption in HdrHistogram 2.2.0 through 2.2.2 allows local users to alter histogram results via a negative count. AbstractHistogram.recordValueWithCount passes count directly to recordCountAtValue, which adds negative values to bucket and total counters without rejecting them. Reachability requires a calling application to pass attacker-controlled counts; the maintainer disputes that this behavior crosses a security boundary.

The record

CVE
CVE-2026-14685
Published
Jul 4, 2026
Updated
Jul 4, 2026
Vendor
HdrHistogram
Product
HdrHistogram
Classifications
CWE-371
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 4, 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

1.7VulDBAV:L/AC:L/Au:S/C:N/I:P/A:N
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
1.9VulDBCVSS: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

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-371State Issues

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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