UpHeron
All vulnerabilities

Servers and applications

CVE-2021-3053

An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenticated network-based attacker to send specifically crafted traffic through the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into…

Severity
High 7.5
Published
8 Sept 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.1.20, 9.0.14, 9.1.9, 10.0.5
Sources
NVD

Affected software

SoftwareAffected versions
Palo Alto Networks PAN-OSServers and applications · cpe:o:paloaltonetworks:pan-os
  • From 8.1.0 before 8.1.20
  • From 9.0.0 before 9.0.14
  • From 9.1.0 before 9.1.9
  • From 10.0.0 before 10.0.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-3053
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-3053