UpHeron
All vulnerabilities

Servers and applications

CVE-2021-3031

Padding bytes in Ethernet packets on PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200 Series, and PA-7000 Series firewalls are not cleared before the data frame is created. This leaks a small amount of random information from the firewall memory into the Ethernet packets. An attacker on the same Ethernet subnet as the PAN-OS firewall is able to collect…

Severity
Medium 4.3
Published
13 Jan 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.1.18, 9.0.12, 9.1.5
Sources
NVD

Affected software

SoftwareAffected versions
Palo Alto Networks PAN-OSServers and applications · cpe:o:paloaltonetworks:pan-os
  • From 8.1.0 before 8.1.18
  • From 9.0.0 before 9.0.12
  • From 9.1.0 before 9.1.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-3031
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-3031