PAN-OS: Memory Corruption Vulnerability in GlobalProtect Portal and Gateway Interfaces
Priority MEDIUM 61CWE-121Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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-121 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.20111 97th percentileScored 2026-11-07
Fix Fixed PAN-OS (Palo Alto Networks): 8.1.17Prisma Access (Palo Alto Networks): 2.2 all, 2.1 all
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 | 8.1 to before 8.1.17 | 8.1.17 | Patch available | CNA |
| Palo Alto Networks | Prisma Access | — | 2.2 all, 2.1 all | Patch available | CNA |
- PAN-OS VendorPalo Alto Networks Affected 8.1 to before 8.1.17 Fixed in 8.1.17 Patch available CNA
- Prisma Access VendorPalo Alto Networks Affected — Fixed in 2.2 all, 2.1 all Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 8.1.0 to before 8.1.17 | Vulnerable | CyberArk Software, a Palo Alto Networks Company |
- cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* Versions 8.1.0 to before 8.1.17 Vulnerable ·CyberArk Software, a Palo Alto Networks Company
Remediation
- Fix · CNA PAN-OS (Palo Alto Networks) Fixed in 8.1.17
- Fix · CNA Prisma Access (Palo Alto Networks) Fixed in 2.2 all, 2.1 all
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3064
- 2026-10-03 Alias added: GHSA-4753-h47c-jrw3
References
More Palo Alto Networks vulnerabilities
- 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
Sources
- CVE-2021-3064 · CVE Program
- CVE-2021-3064 · NVD
- FIRST EPSS
- GHSA-4753-h47c-jrw3 · GitHub Advisory Database · CC BY 4.0
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