November 14, 2026

CVE Watchtower

CVE-2026-0310Palo Alto Networks Cloud NGFW All Out-of-bounds Write

NVD

Vulnerability Summary

A buffer overflow vulnerability in the XML processing functionality of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to the management web or dataplane interface to cause a denial of service (DoS) condition on VM-Series firewalls or execute arbitrary code with root privileges on the PA-Series firewalls.

The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .

Panorama is impacted by this vulnerability.
Severity Level
HIGH(7.2)
Published Date
Sep 10, 2026
Last Modified
Nov 10, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.67%Probability
Root Weakness (CWE)
CWE-787: Out-of-bounds Write ↗
The product writes data past the end, or before the beginning, of the intended buffer.
CVSS v4.0 Base Metrics — Score 7.2 (HIGH)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Red
Attack VectorNetwork
Attack ComplexityHigh
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)Low
Integrity (Subsequent System)Low
Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions
  • Palo Alto Networks Cloud NGFW All
  • Palo Alto Networks PAN-OS >= 12.2.0 and < 12.2.3
  • Palo Alto Networks PAN-OS >= 12.1.0 and < 12.1.4-h10
  • Palo Alto Networks PAN-OS >= 11.2.0 and < 11.2.4-h21
  • Palo Alto Networks PAN-OS >= 11.1.0 and < 11.1.4-h36
  • Palo Alto Networks PAN-OS >= 10.2.0 and < 10.2.7-h37
  • Palo Alto Networks Prisma Access >= 11.2.0 and < 11.2.4-h21
  • Palo Alto Networks Prisma Access >= 10.2.0 and < 10.2.7-h37
Patched Versions
  • Palo Alto Networks PAN-OS 12.2.3
  • Palo Alto Networks PAN-OS 12.1.4-h10
  • Palo Alto Networks PAN-OS 11.2.4-h21
  • Palo Alto Networks PAN-OS 11.1.4-h36
  • Palo Alto Networks PAN-OS 10.2.7-h37
  • Palo Alto Networks Prisma Access 11.2.4-h21
  • Palo Alto Networks Prisma Access 10.2.7-h37

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Palo Alto Networks Cloud NGFW All and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Sep 10, 2026Published
  • Nov 10, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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Related Coverage

External References

Data last checked: Nov 14, 2026 04:06 UTC