CVE-2023-2872Public exploit

Windows crash via NULL pointer dereference

Published May 24, 2023 · Updated Aug 2, 2024

NULL pointer dereference in Electronic Team FlexiHub 5.5.14691.0 allows local users to crash Windows through the fusbhub.sys driver. The fusbhub.sys handler for control code 0x220088 processes attacker-controlled input in a path that dereferences a NULL pointer. Low-privileged local access is required, and exploitation interrupts the host without disclosing or changing data.

CVSS severity5.5
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Electronic Team FlexiHub 5.5.14691.0 allows local users to crash Windows through the fusbhub.sys driver. The fusbhub.sys handler for control code 0x220088 processes attacker-controlled input in a path that dereferences a NULL pointer. Low-privileged local access is required, and exploitation interrupts the host without disclosing or changing data.

The record

CVE
CVE-2023-2872
Published
May 24, 2023
Updated
Aug 2, 2024
Vendor
Electronic Team, Inc.
Product
FlexiHub
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 24, 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=5.5.14691.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Electronic Team, Inc. · FlexiHubversion=5.5.14691.0

Published CVSS scores

5.5VulDBCVSS:3.1/AV:L/AC:L/PR:L/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
4.6VulDBAV:L/AC:L/Au:S/C:N/I:N/A:C

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-476NULL Pointer Dereference
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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