CVE-2020-2040

9.8 criticalEPSS 3.9%

Critical (9.8) in paloaltonetworks pan-os. EPSS 3.9% chance of exploitation in the next 30 days.

A buffer overflow vulnerability in PAN-OS allows an unauthenticated attacker to disrupt system processes and potentially execute arbitrary code with root privileges by sending a malicious request to the Captive Portal or Multi-Factor Authentication interface. This issue impacts: All versions of PAN-OS 8.0; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 9.1 versions earlier than PAN-OS 9.1.3.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 3.9% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2020-09-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

paloaltonetworks:pan-os

References

https://security.paloaltonetworks.com/CVE-2020-2040
https://security.paloaltonetworks.com/CVE-2020-2040

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