CVE-2026-97732

Unprivileged Certificate Bypass in IRONMACE Ironshield tvk.sys Driver

Published Sep 25, 2026 CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
IRONMACE Ironshield 1.0.0.167 has a tvk.sys kernel-mode driver that authenticates client executables by checking for expected publisher and root-certificate strings in WIN_CERTIFICATE data ("IRONMACE Co., Ltd." and "DigiCert Trusted Root G4") instead of parsing and validating the PKCS signature data. As a result, a local unprivileged attacker may bypass this via crafted certificate data and obtain access to privileged IOCTL functionality.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Ironmace
Ironmace ironshield
Vendors & Products Ironmace
Ironmace ironshield
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Unprivileged Certificate Bypass in IRONMACE Ironshield tvk.sys Driver
Type Values Removed Values Added
Description IRONMACE Ironshield 1.0.0.167 has a tvk.sys kernel-mode driver that authenticates client executables by checking for expected publisher and root-certificate strings in WIN_CERTIFICATE data ("IRONMACE Co., Ltd." and "DigiCert Trusted Root G4") instead of parsing and validating the PKCS signature data. As a result, a local unprivileged attacker may bypass this via crafted certificate data and obtain access to privileged IOCTL functionality.
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 25, 2026, 1:43 PM
Reserved
Sep 25, 2026, 3:29 AM
Status
Deferred
Published
Sep 25, 2026, 4:17 AM
Modified
Sep 30, 2026, 5:32 PM