CVE-2026-19382Public exploit

Local availability degradation via unreleased driver memory

Published Aug 10, 2026 · Updated Aug 10, 2026

Memory leak in the speedfan.sys MSR Index Handler in Almico SpeedFan 4.52 allows local users to degrade system availability via manipulated input. The KiSystemCall64 path fails to release allocated memory after processing the input, so repeated requests progressively consume available memory. Exploitation requires local high privileges and can reduce system availability through memory exhaustion.

CVSS severity2.3
Low
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the speedfan.sys MSR Index Handler in Almico SpeedFan 4.52 allows local users to degrade system availability via manipulated input. The KiSystemCall64 path fails to release allocated memory after processing the input, so repeated requests progressively consume available memory. Exploitation requires local high privileges and can reduce system availability through memory exhaustion.

The record

CVE
CVE-2026-19382
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
Almico
Product
SpeedFan
Classifications
CWE-401, CWE-404, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=4.52

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Almico · SpeedFanversion=4.52

Published CVSS scores

1.4VulDBAV:L/AC:L/Au:M/C:N/I:N/A:P
2.3VulDBCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
1.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

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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