The com.epson.InstallNavi.helper tool, deployed with the EPSON printer driver installer, contains a local privilege escalation vulnerability due to multiple flaws in its implementation. It fails to properly authenticate clients over the XPC protocol and does not correctly enforce macOS’s authorization model, exposing privileged functionality to untrusted users. Although it invokes the AuthorizationCopyRights API, it does so using overly permissive custom rights that it registers in the system’s authorization database (/var/db/auth.db). These rights can be requested and granted by the authorization daemon to any local user, regardless of privilege level. As a result, an attacker can exploit the vulnerable service to perform privileged operations such as executing arbitrary commands or installing system components without requiring administrative credentials.
History

Thu, 19 Feb 2026 02:15:00 +0000

Type Values Removed Values Added
Description The com.epson.InstallNavi.helper tool, deployed with the EPSON printer driver installer, contains a local privilege escalation vulnerability due to multiple flaws in its implementation. It fails to properly authenticate clients over the XPC protocol and does not correctly enforce macOS’s authorization model, exposing privileged functionality to untrusted users. Although it invokes the AuthorizationCopyRights API, it does so using overly permissive custom rights that it registers in the system’s authorization database (/var/db/auth.db). These rights can be requested and granted by the authorization daemon to any local user, regardless of privilege level. As a result, an attacker can exploit the vulnerable service to perform privileged operations such as executing arbitrary commands or installing system components without requiring administrative credentials.
Title macOS Local Privilege Escalation via Improper Authorization Handling in EPSON Printer Controller Installer
First Time appeared Epson
Epson epson Printer Controller Installer
Weaknesses CWE-863
CPEs cpe:2.3:a:epson:epson_printer_controller_installer:*:*:*:*:*:*:*:0
Vendors & Products Epson
Epson epson Printer Controller Installer
References
Metrics cvssV3_1

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


cve-icon MITRE

Status: PUBLISHED

Assigner: Pentraze

Published: 2026-02-19T01:37:22.018Z

Updated: 2026-02-19T01:37:22.018Z

Reserved: 2025-05-19T17:26:58.497Z

Link: CVE-2025-4960

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-19T07:17:38.137

Modified: 2026-02-19T15:53:02.850

Link: CVE-2025-4960

cve-icon Redhat

No data.