---
title: "CVE-2026-0310: Palo Alto Networks PAN-OS - Buffer Overflow"
description: "Palo Alto Networks PAN-OS contains a buffer overflow caused by improper XML processing, letting unauthenticated attackers with network access cause denial of service or execute arbitrary code with root privileges, exploit requires network access to management or dataplane interface."
url: https://panop.io/threat-heartbeat/CVE-2026-0310/
---

# CVE-2026-0310 Palo Alto Networks PAN-OS - Buffer Overflow

Palo Alto Networks PAN-OS contains a buffer overflow caused by improper XML processing, letting unauthenticated attackers with network access cause denial of service or execute arbitrary code with root privileges, exploit requires network access to management or dataplane interface.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.37% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-0310)

## Details

Type

Buffer Overflow

Impact

Denial Of Service, Remote Code Execution

CVSS vector

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Red

Published

10 September 2026

Updated

15 October 2026

Weakness

[CWE-787](https://cwe.mitre.org/data/definitions/787.html)

## Vendor fix

Update to the latest PAN-OS version as per Palo Alto Networks guidance.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-0310](https://nvd.nist.gov/vuln/detail/CVE-2026-0310)
- [https://security.paloaltonetworks.com/CVE-2026-0310](https://security.paloaltonetworks.com/CVE-2026-0310)
- [https://cert-portal.siemens.com/productcert/html/ssa-104023.html](https://cert-portal.siemens.com/productcert/html/ssa-104023.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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