CVE-2023-0908Public exploit

System crash via unchecked communication buffer length

Published Feb 18, 2023 · Updated Aug 2, 2024

Out-of-bounds access in Easy File Locker 2.2.0.184 allows local users to crash the system through the xlkfs.sys communication port. MessageNotifyCallback accepts an oversized value sent through FilterConnectCommunicationPort without validating the input-buffer length. Low-privileged local code execution is required, and successful exploitation produces a system crash and blue screen rather than a demonstrated confidentiality or integrity impact.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in Easy File Locker 2.2.0.184 allows local users to crash the system through the xlkfs.sys communication port. MessageNotifyCallback accepts an oversized value sent through FilterConnectCommunicationPort without validating the input-buffer length. Low-privileged local code execution is required, and successful exploitation produces a system crash and blue screen rather than a demonstrated confidentiality or integrity impact.

The record

CVE
CVE-2023-0908
Published
Feb 18, 2023
Updated
Aug 2, 2024
Vendor
XOSLAB.COM
Product
Easy File Locker
Classifications
CWE-404, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=2.2.0.184

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

XOSLAB.COM · Easy File Lockerversion=2.2.0.184

Published CVSS scores

5.5VulDB CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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-404Improper Resource Shutdown or Release
T1499.004Application or System Exploitation

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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