Read the docs
TI-2021-02195 Aliases CVE-2021-3057GHSA-h626-v3v8-8r8x

GlobalProtect App: Buffer Overflow Vulnerability When Connecting to Portal or Gateway

Priority LOW 38CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
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-121 and the CVSS impact.

Summary

A stack-based buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect app that enables a man-in-the-middle attacker to disrupt system processes and potentially execute arbitrary code with SYSTEM privileges. This issue impacts: GlobalProtect app 5.1 versions earlier than GlobalProtect app 5.1.9 on Windows; GlobalProtect app 5.2 versions earlier than GlobalProtect app 5.2.8 on Windows; GlobalProtect app 5.2 versions earlier than GlobalProtect app 5.2.8 on the Universal Windows Platform; GlobalProtect app 5.3 versions earlier than GlobalProtect app 5.3.1 on Linux.

Why it matters now

EPSS 0.01429 73rd percentileScored 2026-11-08
Fix Fixed GlobalProtect App (Palo Alto Networks): 5.1.9, 5.2.8, 5.3.1

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Palo Alto NetworksGlobalProtect App5.1 to before 5.1.9; 5.2 to before 5.2.85.1.9, 5.2.8Patch availableCNA
Palo Alto NetworksGlobalProtect App5.3 to before 5.3.15.3.1Patch availableCNA
Palo Alto NetworksGlobalProtect App5.2 to before 5.2.85.2.8Patch availableCNA
  • GlobalProtect App VendorPalo Alto Networks Affected 5.1 to before 5.1.9; 5.2 to before 5.2.8 Fixed in 5.1.9, 5.2.8 Patch available CNA
  • GlobalProtect App VendorPalo Alto Networks Affected 5.3 to before 5.3.1 Fixed in 5.3.1 Patch available CNA
  • GlobalProtect App VendorPalo Alto Networks Affected 5.2 to before 5.2.8 Fixed in 5.2.8 Patch available CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:linux:*:*5.0 – 5.0.8VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:macos:*:*5.0 – 5.0.9VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:windows:*:*5.0 – 5.0.10VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:linux:*:*5.1 – 5.1.1VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:universal_windows_platform:*:*5.1 – 5.1.1VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:windows:*:*5.1 to before 5.1.9VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:macos:*:*5.1.0 – 5.1.4VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:linux:*:*5.2 to before 5.2.8VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:macos:*:*5.2 to before 5.2.8VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:universal_windows_platform:*:*5.2 to before 5.2.8VulnerableCyberArk Software, a Palo Alto Networks Company
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:windows:*:*5.2 to before 5.2.8VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:linux:*:*5.3 to before 5.3.1VulnerableCyberArk Software, a Palo Alto Networks Company
cpe:2.3:a:paloaltonetworks:globalprotect:5.0:*:*:*:*:universal_windows_platform:*:*5.0VulnerableCyberArk Software, a Palo Alto Networks Company

Remediation

  • Fix · CNA GlobalProtect App (Palo Alto Networks) Fixed in 5.1.9, 5.2.8
  • Fix · CNA GlobalProtect App (Palo Alto Networks) Fixed in 5.3.1
  • Fix · CNA GlobalProtect App (Palo Alto Networks) Fixed in 5.2.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3057
  2. 2026-10-03 Alias added: GHSA-h626-v3v8-8r8x

References

Advisory 1

  • 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