Is CVE-2021-3064 actively exploited?

No active exploitation of CVE-2021-3064 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-3064 be exploited remotely?

Yes. CVE-2021-3064 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-3064?

CVE-2021-3064 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-3064

CRITICAL

CVE-2021-3064

CWE-121Published: November 10, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A memory corruption vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to disrupt system processes and potentially execute arbitrary code with root privileges. The attacker must have network access to the GlobalProtect interface to exploit this issue. This issue impacts PAN-OS 8.1 versions earlier than PAN-OS 8.1.17. Prisma Access customers are not impacted by this issue.

NVD Source

Technical Analysis

CVE-2021-3064 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.