CVE-2026-57919 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

References

Link	Providers
https://docs.matrix42.com/en_US/1041748_vulnerability-list/cve-2026-57919-privilege-escalation-in-empirum-personal-backup
https://matrix42.com

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		https://docs.matrix42.com/en_US/1041748_vulnerability-list/cve-2026-57919-privilege-escalation-in-empirum-personal-backup https://matrix42.com
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'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-06-29T00:00:00.000Z

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

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

Link: CVE-2026-57919

Vulnrichment

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

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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