PBackupVSS.exe in Matrix42 Empirum before 25.5 and 26.x before 26.2 creates a named pipe (\\.\pipe\PBackupVSS) with a DACL that grants GENERIC_READ and GENERIC_WRITE permissions to all authenticated users. A low-privileged local attacker can connect to this pipe and send crafted IPC messages to trigger execution of arbitrary commands with SYSTEM privileges via an untrusted search path. This allows privilege escalation by placing a malicious shadow.exe in a controlled working directory.

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Advisories

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Fixes

Solution

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Workaround

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History

Mon, 29 Jun 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-276
CWE-426
Metrics ssvc

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


Mon, 29 Jun 2026 20:15:00 +0000

Type Values Removed Values Added
Description PBackupVSS.exe in Matrix42 Empirum before 25.5 and 26.x before 26.2 creates a named pipe (\\.\pipe\PBackupVSS) with a DACL that grants GENERIC_READ and GENERIC_WRITE permissions to all authenticated users. A low-privileged local attacker can connect to this pipe and send crafted IPC messages to trigger execution of arbitrary commands with SYSTEM privileges via an untrusted search path. This allows privilege escalation by placing a malicious shadow.exe in a controlled working directory.
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-29T20:44:19.597Z

Reserved: 2026-06-26T00:00:00.000Z

Link: CVE-2026-57919

cve-icon Vulnrichment

Updated: 2026-06-29T20:44:10.319Z

cve-icon NVD

No data.

cve-icon Redhat

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cve-icon OpenCVE Enrichment

No data.

Weaknesses