CVE-2025-4960

macOS Local Privilege Escalation via Improper Authorization Handling in EPSON Printer Controller Installer

Published Feb 19, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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.

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
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Pentraze
Published
Updated
Feb 24, 2026, 1:47 AM
Reserved
May 19, 2025, 5:26 PM
Status
Deferred
Published
Feb 19, 2026, 7:17 AM
Modified
Jun 17, 2026, 9:34 AM