CVE-2020-2011 — PAN-OS: Panorama registration denial of service

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HIGH

PAN-OS: Panorama registration denial of service

Published May 13, 2020

7.5

HIGH

CVSS 3.1

EPSS 1.89%

Description

An improper input validation vulnerability in the configuration daemon of Palo Alto Networks PAN-OS Panorama allows for a remote unauthenticated user to send a specifically crafted registration request to the device that causes the configuration service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS Panorama services by restarting the device and putting it into maintenance mode. This issue affects: All versions of PAN-OS 7.1, PAN-OS 8.0; PAN-OS 8.1 versions earlier than 8.1.14; PAN-OS 9.0 versions earlier than 9.0.7; PAN-OS 9.1 versions earlier than 9.1.0.

Affected products

Vendor Palo Alto Networks Product Pan-OS Default
n/a
- Version
  7.1.*
  Status
  affected
  Constraints
  -
- Version
  8.0.*
  Status
  affected
  Constraints
  -
- Version
  8.1
  Status
  affected
  Constraints
  <8.1.14
- Version
  9.0
  Status
  affected
  Constraints
  <9.0.7
- Version
  9.1
  Status
  affected
  Constraints
  <9.1.0

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Palo Alto Networks

Pan-OS

n/a

Version	Status	Constraints
7.1.*	affected	-
8.0.*	affected	-
8.1	affected	<8.1.14
9.0	affected	<9.0.7
9.1	affected	<9.1.0

Remediation

Vendor solution

This issue is fixed in PAN-OS 8.1.14, PAN-OS 9.0.7, and all later PAN-OS versions.

PAN-OS 8.0 is now end-of-life as of October 31, 2019, and is no longer covered by our Product Security Assurance policies.

PAN-OS 7.1 is on extended support until June 30, 2020, and is only being considered for critical security vulnerability fixes.

Metrics

1.89% 0.01892

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01892

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Table of values (13 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	1.89% (0.01892)	78.87th	v5 (v2026.06.15)
Jun 15, 2026	1.85% (0.01846)	76.22th	v5 (v2026.06.15)
Jul 20, 2024	0.21% (0.00215)	60.01th	v3 (v2023.03.01)
Jun 13, 2024	0.21% (0.00215)	59.73th	v3 (v2023.03.01)
Mar 7, 2023	0.21% (0.00215)	57.72th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	4.50% (0.04499)	74.08th	v2 (v2022.01.01)
Feb 3, 2022	2.86% (0.02857)	63.60th	v1
Jan 6, 2022	2.86% (0.02857)	63.25th	v1
Sep 1, 2021	0.65% (0.00651)	45.91th	v1
Apr 14, 2021	0.65% (0.00651)	0.00th	v1