What’s Vulnerable › Vulnerabilities

CVE-2016-3657

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-04-12 · updated 2026-06-17
• Weakness: CWE-119

Description

Buffer overflow in the GlobalProtect Portal in Palo Alto Networks PAN-OS before 5.0.18, 6.0.x before 6.0.13, 6.1.x before 6.1.10, and 7.0.x before 7.0.5 allows remote attackers to cause a denial of service (device crash) or possibly execute arbitrary code via an SSL VPN request.

Affected products

• Palo Alto Networks PAN-OS: from 5.0.0 before 5.0.18; from 5.1 before 5.1.11; from 6.0.0 before 6.0.13; from 6.1.0 before 6.1.10; from 7.0.0 through 7.0.5 — fixed in 5.0.18, 5.1.11, 6.0.13, 6.1.10

How to fix

Upgrade to a fixed version: Palo Alto Networks PAN-OS 5.0.18, 5.1.11, 6.0.13, 6.1.10. Check the vendor advisory for mitigations.

References

• https://security.paloaltonetworks.com/CVE-2016-3657
• https://security.paloaltonetworks.com/CVE-2016-3657

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