CVE-2016-3656

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% 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

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 7.0.5H2 allows remote attackers to cause a denial of service (service crash) via a crafted 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-2016-3656
https://security.paloaltonetworks.com/CVE-2016-3656

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