CVE-2021-3059

Name: CVE-2021-3059
Creator: NVD / NIST
Published: 2021-11-10T17:15:10.03+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.54%

Last modified Jun 17, 2026

CVE-2021-3059 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. An OS command injection vulnerability in the Palo Alto Networks PAN-OS management interface exists when performing dynamic updates. This vulnerability enables a man-in-the-middle attacker to execute arbitrary OS commands to escalate privileges. EPSS estimates a 1.54% chance of exploitation in the next 30 days.

Description

An OS command injection vulnerability in the Palo Alto Networks PAN-OS management interface exists when performing dynamic updates. This vulnerability enables a man-in-the-middle attacker to execute arbitrary OS commands to escalate privileges. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20-h1; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14-h3; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11-h2; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8; PAN-OS 10.1 versions earlier than PAN-OS 10.1.3. Prisma Access customers that have Prisma Access 2.1 Preferred or Prisma Access 2.1 Innovation firewalls are impacted by this issue.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.54%

71.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Paloaltonetworks	Pan-Os	>= 8.1.0, <= 8.1.20
Paloaltonetworks	Pan-Os	>= 9.0.0, <= 9.0.14
Paloaltonetworks	Pan-Os	>= 9.1.0, <= 9.1.11
Paloaltonetworks	Pan-Os	>= 10.0.0, < 10.0.8
Paloaltonetworks	Pan-Os	>= 10.1.0, < 10.1.3

References

https://security.paloaltonetworks.com/CVE-2021-3059Vendor Advisory
https://security.paloaltonetworks.com/CVE-2021-3059Vendor Advisory

Timeline

Published: Nov 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3059?

How severe is CVE-2021-3059?

CVE-2021-3059 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.54% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3059?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3059?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST