CVE-2023-0907Public exploit

Windows crash via unchecked IOCTL SystemBuffer

Published Feb 18, 2023 · Updated Aug 2, 2024

Denial of service in Filseclab Twister Antivirus 8.17 allows local users to crash Windows through a crafted ffsmon.sys IOCTL request. The ffsmon.sys handler for IOCTL 0x220017 fails to validate the caller-controlled SystemBuffer before using it, producing a blue-screen crash. A normal local user who can open the driver device can interrupt the entire host; no confidentiality or integrity impact is reported.

CVSS severity4.4
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Filseclab Twister Antivirus 8.17 allows local users to crash Windows through a crafted ffsmon.sys IOCTL request. The ffsmon.sys handler for IOCTL 0x220017 fails to validate the caller-controlled SystemBuffer before using it, producing a blue-screen crash. A normal local user who can open the driver device can interrupt the entire host; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2023-0907
Published
Feb 18, 2023
Updated
Aug 2, 2024
Vendor
Filseclab Corporation
Product
Twister Antivirus
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?

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  1. Affected versionversion=8.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Filseclab Corporation · Twister Antivirusversion=8.17

Published CVSS scores

4.3VulDBAV:L/AC:L/Au:M/C:N/I:N/A:C
4.4VulDBCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS: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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