How severe is CVE-2020-2001?

CVE-2020-2001 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-2001 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2001?

CVE-2020-2001 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2001?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-2001 published?

CVE-2020-2001 was published on 2020-05-13 and last updated on 2026-06-17.

CVE-2020-2001

CVE-2020-2001 is a high-severity vulnerability in Paloaltonetworks Pan-os with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 7.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Paloaltonetworks Pan-os
Published: 2020-05-13
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2020-2001?: CVE-2020-2001 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-2001 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2001?: CVE-2020-2001 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2001?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-2001 published?: CVE-2020-2001 was published on 2020-05-13 and last updated on 2026-06-17.

References

https://security.paloaltonetworks.com/CVE-2020-2001

Affected products (1)

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

More vulnerabilities in Paloaltonetworks Pan-os

CVE-2024-3400 — Critical (CVSS 10.0): A command injection as a result of arbitrary file creation vulnerability in the GlobalProtect feature of Palo Alto…
CVE-2020-2021 — Critical (CVSS 10.0): When Security Assertion Markup Language (SAML) authentication is enabled and the 'Validate Identity Provider…
CVE-2019-17440 — Critical (CVSS 10.0): Improper restriction of communications to Log Forwarding Card (LFC) on PA-7000 Series devices with second-generation…
CVE-2012-6603 — Critical (CVSS 10.0): The web management UI in Palo Alto Networks PAN-OS before 3.1.12, 4.0.x before 4.0.10, and 4.1.x before 4.1.4 allows…
CVE-2012-6601 — Critical (CVSS 10.0): The device-management command-line interface in Palo Alto Networks PAN-OS before 3.1.12, 4.0.x before 4.0.10, and 4.1.x…
CVE-2012-6593 — Critical (CVSS 10.0): Palo Alto Networks PAN-OS before 3.1.10 and 4.0.x before 4.0.4 allows remote attackers to execute arbitrary commands…

All CVEs affecting Paloaltonetworks Pan-os →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →