CVE-2023-1628Public exploit

System crash via kvcore.sys null pointer dereference

Published Mar 25, 2023 · Updated Feb 19, 2025

Null pointer dereference in the kvcore.sys IOCTL handler in Jianming Antivirus 16.2.2022.418 allows local users to crash the system. The public record does not identify the handler function, IOCTL code, or input that reaches the null dereference in the Windows kernel driver. Low-privilege local access is required, and successful triggering interrupts system availability without reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.32%
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 the kvcore.sys IOCTL handler in Jianming Antivirus 16.2.2022.418 allows local users to crash the system. The public record does not identify the handler function, IOCTL code, or input that reaches the null dereference in the Windows kernel driver. Low-privilege local access is required, and successful triggering interrupts system availability without reported data disclosure or modification.

The record

CVE
CVE-2023-1628
Published
Mar 25, 2023
Updated
Feb 19, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5VulDBCVSS: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
5.5VulDBCVSS:3.0/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
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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