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VULNERABILITIES

CVE-2020-1999 Details

Description

A vulnerability exists in the Palo Alto Network PAN-OS signature-based threat detection engine that allows an attacker to communicate with devices in the network in a way that is not analyzed for threats by sending data through specifically crafted TCP packets. This technique evades signature-based threat detection. This issue impacts: PAN-OS 8.1 versions earlier than 8.1.17; PAN-OS 9.0 versions earlier than 9.0.11; PAN-OS 9.1 versions earlier than 9.1.5; All versions of PAN-OS 7.1 and PAN-OS 8.0.

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://security.paloaltonetworks.com/CVE-2020-1999 CVEVendor Advisory
https://security.paloaltonetworks.com/CVE-2020-1999 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-754Improper Check for Unusual or Exceptional Conditions[email protected]
CWE-754Improper Check for Unusual or Exceptional Conditions[email protected]

Affected Products

ProductVersions
paloaltonetworks pan-os
>= 7.1.0, <= 7.1.26
>= 8.0.0, <= 8.0.20
>= 8.1.0, < 8.1.17
>= 9.0.0, < 9.0.11
>= 9.1.0, < 9.1.5

CPE

  • cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2020-1999
NVD Published Date:
Nov 12, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2020-1999 Details - Not Deferred