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Palo Alto Networks GlobalProtect's Out-of-Bounds Write Allows a Remote Attacker to Corrupt Memory and Execute Code or Crash the Application

Last refreshed2026-09-27

Status: EXPLOITED  |  Advisory ID: CVE-2026-0297

Key Details

CVECVE-2026-0297
CVSS Score / Version8.1 (High) / CVSS v3.1
Updated2026-09-20
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is high; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected productsPalo Alto Networks GlobalProtect
Exploitation statusPalo Alto Networks is not aware of any malicious exploitation of this issue.
Classified asCWE-787 (Out-of-bounds Write)
Exploitation prediction (EPSS)0.31% probability of exploitation in the next 30 days (21% percentile) -- FIRST.org's EPSS model.

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
Palo Alto NetworksGlobalProtect
SubsystemsGeneral OT
SectorsMulti-sector

What to Know

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).

What to Do

GlobalProtect App: upgrade to 6.3.3-h15 (Linux), 6.3.3-h14 (macOS/Windows), or 6.3.5 (iOS/Android/Chrome OS) as applicable -- see the advisory's own version table for the exact fixed release per platform.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-0297
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-0297
Vendor advisoryhttps://security.paloaltonetworks.com/CVE-2026-0297