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Fencer Vulns
medium 5.5

CVE-2023-1641 json

IObit Malware Fighter IOCTL ObCallbackProcess.sys 0x222018 denial of service

published 2023-03-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-23870

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, which was classified as problematic, has been found in IObit Malware Fighter 9.4.0.776. This issue affects the function 0x222018 in the library ObCallbackProcess.sys of the component IOCTL Handler. The manipulation leads to denial of service. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The identifier VDB-224021 was assigned to this vulnerability.

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/1ncqfaxSdeu-mGVAOnYxqxYtyyFZClHBF/view referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/zeze-zeze/WindowsKernelVuln/tree/master/CVE-2023-1641 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.