CVE-2026-0297 PUBLISHED

GlobalProtect App: Buffer Overflow Vulnerability during UDP Tunnel Handshake

Assigner: palo_alto
Reserved: 03.11.2025 Published: 13.08.2026 Updated: 13.08.2026

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).

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 5.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Palo Alto Networks
Product	GlobalProtect App
Versions	Default: unaffected affected from 6.3.0 to 6.3.3-h15 (excl.) Version 6.2.0 is affected affected from 6.0.0 to 6.0.15 (excl.)

Vendor	Palo Alto Networks
Product	GlobalProtect App
Versions	Default: unaffected affected from 6.3.0 to 6.3.3-h14 (excl.) affected from 6.2.0 to 6.2.8-h13 (excl.) affected from 6.0.0 to 6.0.15 (excl.)

Vendor	Palo Alto Networks
Product	GlobalProtect App
Versions	Default: unaffected affected from 6.3.0 to 6.3.5 (excl.) affected from 6.0.0 to 6.0.15 (excl.)

Exploits

Palo Alto Networks is not aware of any malicious exploitation of this issue.

Credits

our internal security research teams finder

References

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

Problem Types

CWE-787 Out-of-bounds Write CWE

Impacts

CAPEC-540 Overread Buffers