How severe is CVE-2020-2017?

CVE-2020-2017 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-2017 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2017?

CVE-2020-2017 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2017?

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-2020-2017 published?

CVE-2020-2017 was published on 2020-05-13 and last updated on 2026-06-17.

CVE-2020-2017

CVE-2020-2017 is a high-severity vulnerability in Paloaltonetworks Pan-os with a CVSS 3.x base score of 8.8. 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-79.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Paloaltonetworks Pan-os
Published: 2020-05-13
Last modified: 2026-06-17

Description

A DOM-Based Cross Site Scripting Vulnerability exists in PAN-OS and Panorama Management Web Interfaces. A remote attacker able to convince an authenticated administrator to click on a crafted link to PAN-OS and Panorama Web Interfaces could execute arbitrary JavaScript code in the administrator's browser and perform administrative actions. This issue affects: PAN-OS 7.1 versions earlier than 7.1.26; PAN-OS 8.1 versions earlier than 8.1.13; PAN-OS 9.0 versions earlier than 9.0.6; All versions of PAN-OS 8.0.

Frequently asked questions

What is CVE-2020-2017?: A DOM-Based Cross Site Scripting Vulnerability exists in PAN-OS and Panorama Management Web Interfaces. A remote attacker able to convince an authenticated administrator to click on a crafted link to PAN-OS and Panorama Web Interfaces could execute arbitrary JavaScript code in the administrator's browser and perform administrative actions. This issue affects: PAN-OS 7.1 versions earlier than 7.1.26; PAN-OS 8.1 versions earlier than 8.1.13; PAN-OS 9.0 versions earlier than 9.0.6; All versions of PAN-OS 8.0.
How severe is CVE-2020-2017?: CVE-2020-2017 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-2017 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2017?: CVE-2020-2017 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2017?: 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-2020-2017 published?: CVE-2020-2017 was published on 2020-05-13 and last updated on 2026-06-17.

References

https://security.paloaltonetworks.com/CVE-2020-2017

Affected products (1)

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

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