Improper Check for Unusual or Exceptional Conditions in Prisma Access and Palo Alto PAN-OS - CVE-2026-0321
Published: October 15, 2026
Vulnerability identifier: #VU155827
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-0321
CWE-ID: CWE-754
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper checking for unusual or exceptional conditions in PAN-OS network services when processing network traffic received at or passing through a dataplane interface. A remote attacker can send specially crafted network traffic to or through a dataplane interface to cause a denial of service.
No special configuration is required for exposure.
Affected software
Prisma Access
Palo Alto PAN-OS
Palo Alto PAN-OS
How to mitigate CVE-2026-0321
Install security update from vendor's website.
Prisma Access - addressed in versions 10.2.10-h41, 11.2.7-h21, 12.1.7-h8
Palo Alto PAN-OS - addressed in versions 10.2.7-h38, 10.2.10-h41, 10.2.13-h26, 10.2.16-h11, 10.2.18-h12, 11.1.4-h37, 11.1.6-h39, 11.1.7-h11, 11.1.10-h35, 11.1.13-h15, 11.1.16-h3, 11.2.4-h22, 11.2.7-h21, 11.2.10-h15, 11.2.13-h3, 11.2.16, 12.1.4-h12, 12.1.7-h8, 12.1.10-h2, 12.2.4
Palo Alto PAN-OS - addressed in versions 10.2.7-h38, 10.2.10-h41, 10.2.13-h26, 10.2.16-h11, 10.2.18-h12, 11.1.4-h37, 11.1.6-h39, 11.1.7-h11, 11.1.10-h35, 11.1.13-h15, 11.1.16-h3, 11.2.4-h22, 11.2.7-h21, 11.2.10-h15, 11.2.13-h3, 11.2.16, 12.1.4-h12, 12.1.7-h8, 12.1.10-h2, 12.2.4