CVE-2026-0310 vulnerability in Palo Alto Networks Products
Published on September 10, 2026

PAN-OS: Buffer Overflow Vulnerability via XML Processing
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.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-0310 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.

Attack Vector:

NETWORK

Attack Complexity:

HIGH

Privileges Required:

NONE

User Interaction:

NONE

Timeline

2026-09-09

Initial Publication

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2026-0310 has been classified to as a Memory Corruption vulnerability or weakness.

Products Associated with CVE-2026-0310

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Palo Alto Networks PAN-OS

Palo Alto Networks Cloud Ngfw

Palo Alto Networks Prisma Access

Affected Versions

Palo Alto Networks Cloud NGFW:

Version All is affected.

Palo Alto Networks PAN-OS:

Version 12.2.0 and below 12.2.3 is affected.
Version 12.1.0 and below 12.1.4-h10 is affected.
Version 11.2.0 and below 11.2.4-h21 is affected.
Version 11.1.0 and below 11.1.4-h36 is affected.
Version 10.2.0 and below 10.2.7-h37 is affected.

Palo Alto Networks Prisma Access:

Version 12.1.0 and below 12.1.4-h10 is unaffected.
Version 11.2.0 and below 11.2.4-h21 is affected.
Version 10.2.0 and below 10.2.7-h37 is affected.