CVE-2026-7483: Local Privilege Escalation Vulnerability

CVE-2026-7483 Overview

CVE-2026-7483 is a local privilege escalation vulnerability affecting ESET security applications for macOS. The flaw allows an authenticated local attacker to write an arbitrary file with fully controlled content while running as a privileged user. ESET published a customer advisory confirming the issue and released fixed versions of its macOS security products.

The vulnerability maps to [CWE-269] Improper Privilege Management. Exploitation requires local access and low privileges but no user interaction, giving an attacker with a foothold on a macOS host a path to full system compromise.

Critical Impact
A local attacker can write attacker-controlled files as a privileged user, enabling arbitrary code execution with elevated privileges and full compromise of confidentiality, integrity, and availability on the affected macOS endpoint.

Affected Products

ESET security applications for macOS (see vendor advisory for specific product names and versions)
Endpoint deployments of ESET on macOS prior to the fixed builds
Consumer and business ESET macOS products covered by the advisory

Discovery Timeline

2026-07-24 - CVE-2026-7483 published to the National Vulnerability Database
2026-07-30 - Last updated in NVD database

Technical Details for CVE-2026-7483

Vulnerability Analysis

The vulnerability is a local privilege escalation issue in ESET security applications for macOS. A privileged component of the product writes files based on inputs that a lower-privileged local user can influence. As a result, an attacker with a valid local account can cause the privileged process to write an arbitrary file whose path and contents are fully controlled by the attacker.

Because the write occurs in the context of a privileged user, the attacker can target files that are normally protected by the operating system. Typical post-exploitation objectives include placing a malicious LaunchDaemon plist, overwriting a binary invoked by root, or dropping files into system directories to achieve code execution as root on subsequent execution.

The issue falls under [CWE-269] Improper Privilege Management, reflecting insufficient controls over how the privileged helper validates caller-supplied paths and content before performing filesystem writes.

Root Cause

The root cause is inadequate validation and privilege separation in a privileged component of the ESET macOS product. The component performs file write operations on behalf of unprivileged callers without sufficiently restricting the target path or content. This lets a local user redirect writes to sensitive locations that the caller could not modify directly.

Attack Vector

The attack vector is local. An attacker must already have code execution or shell access on the macOS host as an unprivileged user. From that position, the attacker interacts with the vulnerable ESET privileged interface, supplies a controlled destination path and file content, and triggers the write. The privileged process performs the write, producing an attacker-controlled file with elevated permissions that can be leveraged for persistence or code execution as root.

No verified proof-of-concept code is publicly available. Refer to the ESET Customer Advisory on macOS Vulnerability for vendor-authoritative technical detail.

Detection Methods for CVE-2026-7483

Indicators of Compromise

Unexpected files created in privileged locations such as /Library/LaunchDaemons/, /Library/LaunchAgents/, or /usr/local/bin/ shortly after non-root user activity.
Modifications to ESET product files, configuration, or helper binaries performed by non-administrative accounts.
New or modified plist files that reference unusual executables or run as root at boot.

Detection Strategies

Audit filesystem writes to system-owned directories that originate from ESET privileged helper processes but were triggered by low-privileged users.
Correlate ESET helper IPC or XPC activity with subsequent file creation events in protected locations.
Flag execution of newly created root-owned binaries or LaunchDaemons that were not delivered by a signed installer package.

Monitoring Recommendations

Enable macOS Endpoint Security telemetry for ES_EVENT_TYPE_NOTIFY_WRITE and ES_EVENT_TYPE_NOTIFY_CREATE events in privileged paths.
Monitor launchctl load events and changes under /Library/LaunchDaemons/ and /Library/LaunchAgents/.
Alert on unsigned or newly signed binaries executed by launchd after recent filesystem changes.

How to Mitigate CVE-2026-7483

Immediate Actions Required

Update all ESET security applications for macOS to the fixed versions listed in the ESET Customer Advisory on macOS Vulnerability.
Inventory macOS endpoints running ESET products and prioritize systems with multiple local user accounts or shared use.
Review recent filesystem and LaunchDaemon changes on affected hosts for signs of exploitation before patching.

Patch Information

ESET has released fixed versions of its macOS security applications that address CVE-2026-7483. Consult the vendor advisory for the exact fixed build numbers per product line and deploy through your standard ESET management console or manual installer.

Workarounds

Restrict local interactive and SSH access on macOS endpoints to trusted administrators until patching is complete.
Enforce least privilege for local accounts and remove unnecessary standard user access on servers and shared systems.
Monitor ESET privileged helper activity and alert on writes to system-protected directories initiated on behalf of non-admin users.

bash

# Verify installed ESET product version on macOS
system_profiler SPApplicationsDataType | grep -A 4 -i "ESET"

# List recently modified LaunchDaemons that could indicate abuse
sudo find /Library/LaunchDaemons -type f -mtime -14 -print -exec ls -l {} \;