VULNERABILITY INTELLIGENCE

CVE-2020-2031

CVSS score4.9 MEDIUM
EPSS probability1.14%
CISA KEVNot currently listed
Published2020-07-08
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Description

An integer underflow vulnerability in the dnsproxyd component of the PAN-OS management interface allows authenticated administrators to issue a command from the command line interface that causes the component to stop responding. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 9.1 versions earlier than PAN-OS 9.1.3. This issue does not impact PAN-OS 8.1, PAN-OS 9.0, or Prisma Access services.

Weakness classification

  • psirt@paloaltonetworks.com: CWE-191
  • nvd@nist.gov: CWE-191

Primary references