Home/CVE/A buffer overflow vulnerability in PAN-OS allows an unauthenticated attacker to disrupt system processes and potentially
CVE

CVE-2020-2040

A buffer overflow vulnerability in PAN-OS allows an unauthenticated attacker to disrupt system processes and potentially

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.

CRITICAL · CVSS 9.8 EPSS 0.03993
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

4
paloaltonetworks pan-os>= 8.0.0 and <= 8.0.20
paloaltonetworks pan-os>= 8.1.0 and < 8.1.15
paloaltonetworks pan-os>= 9.0.0 and < 9.0.9
paloaltonetworks pan-os>= 9.1.0 and < 9.1.3
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · psirt@paloaltonetworks.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Sep 2020 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://security.paloaltonetworks.com/CVE-2020-2040Vendor Advisory
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