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Fencer Vulns
medium 5.5

CVE-2023-1639 json

IObit Malware Fighter IOCTL ImfRegistryFilter.sys 0x8001E04C denial of service

published 2023-03-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-23868

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

Summary

A vulnerability classified as problematic has been found in IObit Malware Fighter 9.4.0.776. This affects the function 0x8001E04C in the library ImfRegistryFilter.sys of the component IOCTL Handler. The manipulation leads to denial of service. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-224019.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • drive.google.com https://drive.google.com/file/d/1hWgHhboaekq4hGIj2kNgEI54rM-u_rvV/view referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/zeze-zeze/WindowsKernelVuln/tree/master/CVE-2023-1639 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
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
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

  • IObit Malware Fighter

Classification

Weakness
  • CWE-404 Improper Resource Shutdown or Release

References

Sources

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.