FabulaTech USB over Network IOCT ftusbbus2.sys 0x220448 null pointer dereference

published 2024-12-16 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-51030

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits: 0; none known

A vulnerability, which was classified as problematic, was found in FabulaTech USB over Network 6.0.6.1. This affects the function 0x220448 in the library ftusbbus2.sys of the component IOCT Handler. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 22 mo ago (2024-12-16)

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

shareforall.notion.site https://shareforall.notion.site/FabulaTech-USB-over-Network-Client-ftusbbus2-0x220448-NPD-DOS-15160437bb1e80cb837cd715680be6ea referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA	2.0	4.6	AV:L/AC:L/Au:S/C:N/I:N/A:C
CNA	4.0	6.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

FabulaTech USB over Network

Classification

Weakness

CWE-476 NULL Pointer Dereference
CWE-404 Improper Resource Shutdown or Release

References

shareforall.notion.site /FabulaTech-USB-over-Network-Client-ftusbbus2-0x220448-NPD-DOS-15160437bb1e80cb837cd715680be6ea
exploit, third-party-advisory
vuldb.com /?id.288525
vdb-entry, technical-description, permissions-required
vuldb.com /?ctiid.288525
signature, permissions-required, vdb-entry
vuldb.com /?submit.456030
third-party-advisory, vdb-entry

Sources

CVE List CVE-2024-12656
NVD CVE-2024-12656

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary