CVE-2026-40951

Client service interrupt via malformed local API data

Published Apr 30, 2026 · Updated Apr 30, 2026

Memory corruption in Absolute Security Secure Access before 14.50 allows local users to interrupt the Windows client through malformed API data. The affected API processes attacker-controlled malformed data in a way that corrupts memory; Absolute Security has not identified the API or faulty operation. Exploitation requires local low-privileged control of a Windows endpoint and interrupts only the client, with no reported data disclosure or modification.

CVSS severity6.8
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Absolute Security Secure Access before 14.50 allows local users to interrupt the Windows client through malformed API data. The affected API processes attacker-controlled malformed data in a way that corrupts memory; Absolute Security has not identified the API or faulty operation. Exploitation requires local low-privileged control of a Windows endpoint and interrupts only the client, with no reported data disclosure or modification.

The record

CVE
CVE-2026-40951
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
Absolute Security
Product
Absolute Secure Access
Classifications
CWE-400, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 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=0 <14.50

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Absolute Security · Absolute Secure Accessversion=0 <14.50

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8NetMotion SoftwareCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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