What is CVE-2020-2001?

CVE-2020-2001 is a high-severity vulnerability in Palo Alto Networks Pan-Os, classified under Write-what-where Condition. CVSS score: 8.1/10. Published 2020-05-13.

How severe is CVE-2020-2001?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Palo Alto Networks Pan-Os

CVE-2020-2001

An external control of path and data vulnerability in the Palo Alto Networks PAN-OS Panorama XSLT processing logic that allows an unauthenticated user with network access to PAN-OS management interface to write attacker supplied file on the system and elevate privileges. This issue affects: All PAN-OS 7.1 Panorama and 8.0 Panorama versions; PAN-OS 8.1 versions earlier than 8.1.12 on Panorama; PAN-OS 9.0 versions earlier than 9.0.6 on Panorama.

Published 2020-05-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.4th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.014 · change: +0.000

Affected products

Palo Alto Networks Pan-Os — versions 8.0.*, 7.1.*, 8.1
Paloaltonetworks Pan-Os

Weakness classification (CWE)

References

security.paloaltonetworks.com/CVE-2020-2001 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-2001?: CVE-2020-2001 is a high-severity vulnerability in Palo Alto Networks Pan-Os, classified under Write-what-where Condition. CVSS score: 8.1/10. Published 2020-05-13.
How severe is CVE-2020-2001?: High severity. CVSS v3 base score is 8.1 out of 10.