CVE-2026-40949

Local Windows client crash

Published Apr 30, 2026 · Updated Apr 30, 2026

Stack-based buffer overflow in Absolute Secure Access before 14.50 allows local users to crash the Windows client. Absolute has not published the affected function, input path, or operation that overruns the stack buffer. Exploitation requires high local privileges and no user interaction; the reported consequence is loss of client availability, not code execution.

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

Stack-based buffer overflow in Absolute Secure Access before 14.50 allows local users to crash the Windows client. Absolute has not published the affected function, input path, or operation that overruns the stack buffer. Exploitation requires high local privileges and no user interaction; the reported consequence is loss of client availability, not code execution.

The record

CVE
CVE-2026-40949
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
Absolute Security
Product
Absolute Secure Access
Classifications
CWE-121, T1489
Attack vector
local
Privileges
admin

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 privilegesadmin

What is affected?

Absolute Security · Absolute Secure Accessversion=0 <14.50

Published CVSS scores

4.4NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
6.8NetMotion SoftwareCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1489Service Stop

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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