CVE-2026-0267: Palo Alto GlobalProtect macOS Passcode Exposure Vulnerability

Technical summary

CVE-2026-0267 is an information exposure vulnerability (CWE-532) affecting Palo Alto Networks GlobalProtect on macOS. The vulnerability allows unprivileged local users to retrieve configured passcodes used to control app disable, disconnect, and uninstall operations. The CVSS v3.1 score of 5.5 (Medium) reflects local attack vector, low complexity, and high confidentiality impact with no integrity or availability impact. The attack requires local access and user-level privileges but no user interaction. Successful exploitation enables unauthorized modification of VPN endpoint protection posture.

Business impact

Organizations relying on GlobalProtect to enforce mandatory VPN connectivity and prevent policy bypass face reduced control over endpoint security. A disgruntled employee or attacker with local device access could circumvent VPN enforcement, potentially exposing corporate traffic to interception or policy violation. The blast radius is limited to individual macOS systems, but in bring-your-own-device or shared-device environments, risk compounds. Compliance frameworks (SOC 2, ISO 27001, PCI-DSS) that mandate continuous VPN enforcement may see audit findings if this vulnerability remains unpatched across managed macOS fleet.

Affected systems

This vulnerability affects Palo Alto Networks GlobalProtect application on macOS systems. The vulnerability advisory should specify which GlobalProtect versions are vulnerable; patch your GlobalProtect installation according to Palo Alto Networks' official security advisory to confirm affected and remediated versions for your deployment.

Exploitability

Exploitation requires local access to an affected macOS device and is not remotely exploitable. An attacker must already have user-level access to the system—either through a prior compromise, physical access, or insider threat. Once local access is obtained, reading the stored passcodes is trivial and requires no special tools or user interaction. The vulnerability is unlikely to be weaponized in broad campaigns but poses meaningful risk in targeted insider-threat or advanced-persistent-threat scenarios where device compromise is already assumed.

Remediation

Patch GlobalProtect on all macOS endpoints to the fixed version specified in Palo Alto Networks' security advisory. Ensure device management or mobile device management (MDM) policies enforce automatic app updates where possible. In parallel, review and restrict local user accounts on macOS systems, enforce full-disk encryption (FileVault), and implement endpoint detection and response (EDR) to detect suspicious file access patterns or unauthorized VPN disconnections. For high-risk environments, consider additional access controls to limit local account creation on managed devices.

Patch guidance

Contact Palo Alto Networks or consult their official security advisory to obtain the specific patched GlobalProtect version for macOS. Deploy patches via your standard macOS patch management process (MDM, Jamf, Intune, or manual distribution). Verify patch deployment across your macOS fleet and validate that GlobalProtect functionality remains intact post-update. Test in a pre-production environment first if your organization operates critical dependent workflows.

Detection guidance

Monitor for unauthorized changes to VPN connectivity status on macOS endpoints (e.g., unexpected GlobalProtect disconnections or uninstallation events). EDR tools should flag suspicious file access to GlobalProtect configuration directories or attempts to read sensitive credential storage areas. Log access to macOS Keychain or credential vaults where passcodes may be stored. Correlate VPN disconnection events with user activity logs to identify anomalies. Alerting on repeated failed GlobalProtect operations followed by successful disconnection may indicate passcode discovery and exploitation.

Why prioritize this

Although the CVSS score of 5.5 is Medium, prioritization depends on your environment. Organizations with strict BYOD policies, high insider-threat risk, or compliance requirements for continuous VPN enforcement should treat this as high-priority. Organizations where macOS devices are tightly controlled, physically secured, and EDR-monitored may defer patching slightly, but remediation should occur within 30 days. This is not a critical remote vulnerability, so 60–90 day patch windows are defensible for lower-risk environments.

Risk score, explained

The CVSS v3.1 score of 5.5 reflects the vulnerability's local-only attack surface (AV:L), low attack complexity (AC:L), requirement for local/user privileges (PR:L), and high confidentiality impact (C:H) but zero integrity or availability impact (I:N/A:N). The score appropriately penalizes the information exposure but acknowledges that reading a passcode alone does not directly compromise data or service availability—only enables further unauthorized actions. Practical risk in your organization may differ based on device access controls, insider-threat posture, and VPN enforcement criticality.

Frequently asked questions