CVE-2026-0310

PAN-OS: Buffer Overflow Vulnerability via XML Processing

HIGH

7.2

CVSS Score

Published: September 10, 2026 at 05:21 AM UTC

Updated: October 15, 2026 at 02:18 AM UTC

3 products affected across 1 vendorPAN-OSPrisma AccessCloud NGFW

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Severity

HIGH7.2

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cloud NGFW · Palo Alto Networks

90%

All versions

PAN-OS · Palo Alto Networks

90%

10.2.0 11.1.0 11.2.0 12.1.0 12.2.0

Affected range stops below 10.2.7-h37, so it looks safe — our inference, not a vendor statement

Affected range stops below 11.1.4-h36, so it looks safe — our inference, not a vendor statement

Affected range stops below 11.2.4-h21, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.4-h10, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.2.3, so it looks safe — our inference, not a vendor statement

Prisma Access · Palo Alto Networks

90%

10.2.0 11.2.0

Affected range stops below 10.2.7-h37, so it looks safe — our inference, not a vendor statement

Affected range stops below 11.2.4-h21, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 12.1.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://security.paloaltonetworks.com/CVE-2026-0310

References (2)

Vendor Advisory

Source: cverecord

https://security.paloaltonetworks.com/CVE-2026-0310

Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

https://cert-portal.siemens.com/productcert/html/ssa-104023.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHpalo_alto

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-787

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