CVE-2026-0294 Overview
CVE-2026-0294 is a privilege escalation vulnerability in the Palo Alto Networks Prisma® Access Agent application on Windows and macOS. A local, unauthenticated user can leverage the flaw to execute code with elevated privileges on the affected host. The Prisma Access Agent builds for Linux, iOS, Android, and ChromeOS are not affected.
The root weakness is classified as [CWE-427] Uncontrolled Search Path Element, indicating the agent loads a library or resource from a location an attacker can influence. Exploitation requires local access but no user interaction and no prior privileges.
Critical Impact
A local attacker can escalate to the privilege level of the Prisma Access Agent, gaining high confidentiality and integrity impact on the endpoint.
Affected Products
- Palo Alto Networks Prisma® Access Agent on Windows
- Palo Alto Networks Prisma® Access Agent on macOS
- Not affected: Prisma Access Agent on Linux, iOS, Android, and ChromeOS
Discovery Timeline
- 2026-08-13 - CVE-2026-0294 published to NVD
- 2026-08-13 - Last updated in NVD database
Technical Details for CVE-2026-0294
Vulnerability Analysis
The Prisma Access Agent runs privileged components on Windows and macOS endpoints to manage secure connectivity. The vulnerability allows a local user without any prior privileges to execute code in the security context of the agent. Because the agent operates with elevated rights, successful exploitation yields privilege escalation from a standard user to a higher-privileged process.
The issue is categorized under [CWE-427], which covers scenarios where an application resolves a library, executable, or configuration file from a search path that includes a location writable or influenceable by lower-privileged users. Attackers can plant a malicious component in the resolved path so that the privileged process loads attacker-controlled code at runtime.
Root Cause
The underlying cause is an uncontrolled search path element in the Prisma Access Agent. When the privileged component resolves a dependency, it consults a path that a local user can write to or manipulate. This allows attacker-supplied content to be loaded and executed by the privileged process without integrity verification.
Attack Vector
Exploitation is local. An attacker who already has a foothold on a Windows or macOS endpoint running the Prisma Access Agent places a crafted binary or resource in a location searched by the agent. When the agent loads that resource, the attacker's code executes with the agent's privileges. No authentication or user interaction is required beyond initial local access.
For complete vendor details, see the Palo Alto Networks Advisory.
Detection Methods for CVE-2026-0294
Indicators of Compromise
- Unexpected binaries, DLLs, or dynamic libraries appearing in directories referenced by the Prisma Access Agent search path.
- Prisma Access Agent processes spawning unusual child processes such as command interpreters or scripting engines.
- File creation events in agent-adjacent directories originating from standard user accounts.
Detection Strategies
- Monitor process creation events where the Prisma Access Agent service is the parent of shells, cmd.exe, powershell.exe, bash, or zsh.
- Audit filesystem writes by non-administrative users into directories consulted by the agent at load time.
- Correlate library load events with file provenance to identify unsigned or user-writable modules loaded by privileged agent processes.
Monitoring Recommendations
- Enable module load telemetry (Windows Sysmon Event ID 7, macOS Endpoint Security ES_EVENT_TYPE_NOTIFY_MMAP) on hosts running the agent.
- Alert on new file writes to any directory in the agent's search path that is not exclusively controlled by administrators.
- Baseline the set of libraries normally loaded by the Prisma Access Agent and alert on deviations.
How to Mitigate CVE-2026-0294
Immediate Actions Required
- Inventory all Windows and macOS endpoints running the Prisma Access Agent and identify installed versions.
- Apply the fixed release published by Palo Alto Networks as documented in the vendor advisory.
- Restrict local administrative rights on endpoints to reduce the pool of users capable of staging exploit files.
Patch Information
Palo Alto Networks has published remediation guidance in the Palo Alto Networks Advisory. Administrators should consult the advisory for the specific fixed versions of the Prisma Access Agent for Windows and macOS and deploy them across affected endpoints.
Workarounds
- Enforce strict directory permissions on the agent installation path and any directories in its search path so only administrators can write to them.
- Apply application control or allowlisting to block unsigned or unexpected libraries from loading into the Prisma Access Agent process.
- Limit interactive local logons on high-value systems until the patch is deployed.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
