Cloud NGFW: Use of Uninitialized Resource
CVE-2026-0301 is a high-severity use of uninitialized resource vulnerability in Cloud NGFW from Palo Alto Networks, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Cloud NGFW versions: All. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.56% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update PAN-OS to 11.1.16-h1 or 10.2.8, whichever matches your release line, or a later version.
- Update Prisma Access to 10.2.10 or a later version.
- Read the advisory on security.paloaltonetworks.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Palo Alto Networks | Cloud NGFW | All | Not stated |
| Palo Alto Networks | PAN-OS | 11.1.0 up to, but not including, 11.1.16-h1; 10.2.0 up to, but not including, 10.2.8 | 11.1.16-h1, 10.2.8 |
| Palo Alto Networks | Prisma Access | 10.2.0 up to, but not including, 10.2.10 | 10.2.10 |
| Siemens | RUGGEDCOM APE1808 | all versions | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 1.7 | Low | CNA (paloaltonetworks.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
An information disclosure vulnerability in the URL Filtering feature of Palo Alto Networks PAN-OS® software enables an unauthenticated user with network access to obtain sensitive information. Panorama is not impacted by this vulnerability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Uninitialized Resource
The product uses or accesses a resource that has not been initialized.
How developers prevent this class of flaw
- Explicitly initialize the resource before use. If this is performed through an API function or standard procedure, follow all required steps.
- Pay close attention to complex conditionals that affect initialization, since some branches might not perform the initialization.
- Avoid race conditions (CWE-362) during initialization routines.
More Use of Uninitialized Resource vulnerabilities (CWE-908)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in Cloud NGFW
- 7.2 High severity
Palo Alto Networks PAN-OS Code Injection Exploited
- 7.2 High severity
- 7.5 High severity
- 7.2 High severity
- 9.9 Critical severity
- 7.2 High severity
Recent Use of Uninitialized Resource vulnerabilities
- 7.5 High severity
- 7.0 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
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