TI-2021-02194 Aliases CVE-2021-3056 GHSA-63p7-57p8-xrww

PAN-OS: Memory Corruption Vulnerability in GlobalProtect Clientless VPN During SAML Authentication

MEDIUM 41CWE-120Published 2021-11-10 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.01537 75th percentileScored 2026-11-08

Fix Fixed PAN-OS (Palo Alto Networks): 9.0.14, 8.1.20, 9.1.9 +1Prisma Access (Palo Alto Networks): 2.2 all, 2.1 Innovation

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Palo Alto Networks	PAN-OS	9.0 to before 9.0.14; 8.1 to before 8.1.20; 9.1 to before 9.1.9; 10.0 to before 10.0.1	9.0.14, 8.1.20, 9.1.9, 10.0.1	Patch available	CNA
Palo Alto Networks	Prisma Access	2.1 Preferred	2.2 all, 2.1 Innovation	Patch available	CNA

PAN-OS VendorPalo Alto Networks Affected 9.0 to before 9.0.14; 8.1 to before 8.1.20; 9.1 to before 9.1.9; 10.0 to before 10.0.1 Fixed in 9.0.14, 8.1.20, 9.1.9, 10.0.1 Patch available CNA
Prisma Access VendorPalo Alto Networks Affected 2.1 Preferred Fixed in 2.2 all, 2.1 Innovation Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:paloaltonetworks:pan-os::::::::	8.1.0 to before 8.1.20; 9.0.0 to before 9.0.14; 9.1.0 to before 9.1.9	Vulnerable	CyberArk Software, a Palo Alto Networks Company
cpe:2.3:o:paloaltonetworks:pan-os:10.0.0:::::::*	10.0.0	Vulnerable	CyberArk Software, a Palo Alto Networks Company

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* Versions 8.1.0 to before 8.1.20; 9.0.0 to before 9.0.14; 9.1.0 to before 9.1.9 Vulnerable ·CyberArk Software, a Palo Alto Networks Company
cpe:2.3:o:paloaltonetworks:pan-os:10.0.0:*:*:*:*:*:*:* Versions 10.0.0 Vulnerable ·CyberArk Software, a Palo Alto Networks Company

Remediation

Fix · CNA PAN-OS (Palo Alto Networks) Fixed in 9.0.14, 8.1.20, 9.1.9, 10.0.1
Fix · CNA Prisma Access (Palo Alto Networks) Fixed in 2.2 all, 2.1 Innovation

Timeline

2026-10-02 Threatist record created from CVE-2021-3056
2026-10-03 Alias added: GHSA-63p7-57p8-xrww

References

Advisory 1

https://security.paloaltonetworks.com/CVE-2021-3056

TI-2024-08782 Expedition: Unauthenticated OS Command Injection Vulnerability Leads to Firewall Credential Disclosure KEVCVSS 4.0CRITICAL 9.9
TI-2024-03172 PAN-OS: Arbitrary File Creation Leads to OS Command Injection Vulnerability in GlobalProtect KEVCVSS 3.1CRITICAL 10.0
TI-2020-01936 PAN-OS: Authentication Bypass in SAML Authentication KEVCVSS 3.1CRITICAL 10.0
TI-2017-11675 Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and… KEVCVSS 3.1CRITICAL 9.8
TI-2026-00239 PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal KEVCVSS 4.0CRITICAL 9.3
TI-2024-08784 Expedition: SQL Injection Leads to Firewall Admin Credential Disclosure KEVCVSS 4.0CRITICAL 9.2

See all 367 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences