What is CVE-2020-2027?

CVE-2020-2027 is a high-severity vulnerability in Palo Alto Networks Pan-Os, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2020-06-10.

How severe is CVE-2020-2027?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in Palo Alto Networks Pan-Os

CVE-2020-2027

A buffer overflow vulnerability in the authd component of the PAN-OS management server allows authenticated administrators to disrupt system processes and potentially execute arbitrary code with root privileges. This issue affects: All versions of PAN-OS 7.1 and PAN-OS 8.0; PAN-OS 8.1 versions earlier than PAN-OS 8.1.13; PAN-OS 9.0 versions earlier than PAN-OS 9.0.7.

Vulnerability class: Buffer Overflow

Published 2020-06-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

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

Weakness classification (CWE)

References

security.paloaltonetworks.com/CVE-2020-2027 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-2027?: CVE-2020-2027 is a high-severity vulnerability in Palo Alto Networks Pan-Os, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2020-06-10.
How severe is CVE-2020-2027?: High severity. CVSS v3 base score is 7.2 out of 10.