CVE-2026-0297

GlobalProtect App: Buffer Overflow Vulnerability during UDP Tunnel Handshake

State: Published
Severity: 5.2 Medium
Published: Aug 13, 2026
Updated: Aug 13, 2026
Reserved: Nov 3, 2025

Description

A buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect™ app that enables a man-in-the-middle (MitM) attacker or a rogue gateway to disrupt system processes and potentially execute arbitrary code with elevated privileges (SYSTEM privileges on Windows, and root privileges on macOS and Linux).

Scores

CVSS	Score	Vector	Source
4.0	5.2 Medium	CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber	palo_alto

Weaknesses

CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
GlobalProtect AppPalo Alto Networks	6.3.0 to before 6.3.3-h15Affectedfrom 6.3.3-h15Not affected 6.2.0Affected 6.0.0 to before 6.0.15Affectedfrom 6.0.15Not affected
GlobalProtect AppPalo Alto Networks	6.3.0 to before 6.3.3-h14Affectedfrom 6.3.3-h14Not affected 6.2.0 to before 6.2.8-h13Affectedfrom 6.2.8-h13Not affected 6.0.0 to before 6.0.15Affectedfrom 6.0.15Not affected
GlobalProtect AppPalo Alto Networks	6.3.0 to before 6.3.5Affectedfrom 6.3.5Not affected 6.0.0 to before 6.0.15Affectedfrom 6.0.15Not affected

References

https://security.paloaltonetworks.com/CVE-2026-0297vendor-advisory

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