Access Control Vulnerability in Jiangmin Antivirus 21
CVE-2026-19193

8.5HIGH

Key Information:

Vendor

Jiangmin

Status
Antivirus
Vendor
CVE Published:
7 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-19193?

A vulnerability has been identified in Jiangmin Antivirus 21 that affects the MessageNotifyCallback function within the kvcore.sys library of the Minifilter Port. This flaw allows for improper access controls, enabling local attackers to potentially exploit the system through unauthorized manipulation. The exploit has been made public, indicating a pressing security risk to users of this antivirus product. Despite early disclosures to the vendor, a response was not received, raising concerns about the remediation of this issue.

Affected Version(s)

Antivirus 21

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-19193 - Proof of Concept

References

https://vuldb.com/vuln/386711
vdb-entrytechnical-description
https://vuldb.com/vuln/386711/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19193
third-party-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

patrickt2017 (VulDB User)
VulDB CNA Team
.