CVE-2021-3056

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A memory corruption vulnerability in Palo Alto Networks PAN-OS GlobalProtect Clientless VPN enables an authenticated attacker to execute arbitrary code with root user privileges during SAML authentication. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; PAN-OS 10.0 versions earlier than PAN-OS 10.0.1. Prisma Access customers with Prisma Access 2.1 Preferred firewalls are impacted by this issue.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-120CWE-787

Affected software

VendorProductVersions
Palo Alto NetworksPAN-OS>= 9.0, < 9.0.14; >= 8.1, < 8.1.20; >= 9.1, < 9.1.9; >= 10.0, < 10.0.1
Palo Alto NetworksPrisma Access2.1 Preferred

References

Timeline

Published
Nov 10, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-305608.8Use after free in Blink XSLT in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a CVE-2021-305618.8Type Confusion in V8 in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted CVE-2021-305628.8Use after free in WebSerial in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a cCVE-2021-305638.8Type Confusion in V8 in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted CVE-2021-305648.8Heap buffer overflow in WebXR in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via aCVE-2021-305658.8Out of bounds write in Tab Groups in Google Chrome on Linux and ChromeOS prior to 92.0.4515.107 allowed an attacker who convinced a user to CVE-2021-305668.8Stack buffer overflow in Printing in Google Chrome prior to 92.0.4515.107 allowed a remote attacker who had compromised the renderer processCVE-2021-305678.8Use after free in DevTools in Google Chrome prior to 92.0.4515.107 allowed an attacker who convinced a user to open DevTools to potentially CVE-2021-305688.8Heap buffer overflow in WebGL in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially exploit heap corruption via aCVE-2021-305698.8Use after free in sqlite in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially exploit heap corruption via a crafCVE-2021-30578.1A stack-based buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect app that enables a man-in-the-middle attacker to CVE-2021-305719.6Insufficient policy enforcement in DevTools in Google Chrome prior to 92.0.4515.107 allowed an attacker who convinced a user to install a ma
CVE-2021-3056: High severity, CVSS 8.8 | Vulnix