WildFire WF-500 and WF-500-B: Arbitrary File Read and Delete Vulnerability in WildFire Appliance (WF-500, WF-500-B)
An arbitrary File Read and Delete Vulnerability in Palo Alto Networks WildFire® WF-500 and WF-500-B appliances enables users to read sensitive information and delete arbitrary files. This vulnerability affects WF-500 and WF-500-B appliances running in the default non-FIPS configuration mode. The WildFire Appliance (WF-500, WF-500-B) software update is now available to customers that use the WildFire Appliance (WF-500, WF-500-B) for on-premise sandboxing. Please note that customers using the WildFire Public cloud service are NOT impacted by this vulnerability.
- Published
- May 13, 2026
- Updated
- Jul 14, 2026
- EPSS
- 0.3% · 24th percentile
- CWE
- CWE-73
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Report tools
Action score
20
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · palo_alto
- 5.0
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:Y/R:U/V:C/RE:M/U:Amber
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| paloaltonetworks | pan-os | cpe:2.3:o:paloaltonetworks:pan-os |
| paloaltonetworks | wf-500 | cpe:2.3:h:paloaltonetworks:wf-500 |
| paloaltonetworks | wf-500-b | cpe:2.3:h:paloaltonetworks:wf-500-b |
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Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- paloaltonetworks pan-os11.2.8 and later · before 11.2.10
- paloaltonetworks pan-os10.2.8 and later · before 10.2.10
- paloaltonetworks pan-os10.2.11 and later · before 10.2.13
- paloaltonetworks pan-os10.2.14 and later · before 10.2.16
- paloaltonetworks pan-os11.1.0 and later · before 11.1.4
- paloaltonetworks pan-os11.1.5 and later · before 11.1.6
- paloaltonetworks pan-os11.1.8 and later · before 11.1.10
- paloaltonetworks pan-os11.1.11 and later · before 11.1.13
- paloaltonetworks pan-osbefore 10.2.7
- paloaltonetworks pan-os12.1.5 and later · before 12.1.7
- paloaltonetworks pan-os11.2.0 and later · before 11.2.4
- paloaltonetworks pan-os11.2.5 and later · before 11.2.7
- paloaltonetworks pan-os12.1.0 and later · before 12.1.4
- paloaltonetworks pan-os10.2.10
- paloaltonetworks pan-os10.2.13
- paloaltonetworks pan-os10.2.16
- paloaltonetworks pan-os10.2.17
- paloaltonetworks pan-os10.2.18
- paloaltonetworks pan-os10.2.7
- paloaltonetworks pan-os11.1.10
Versions reported by the vendor
Affected version ranges reported by the assigning authority (palo_alto). Independent of NVD's CPE analysis and usually ahead of it.
Palo Alto Networks WildFire WF-500 and WF-500-B
- 12.1.0 and later · before 12.1.7, 12.1.4-h5affectedfixed in 12.1.7, 12.1.4-h5
- 11.2.0 and later · before 11.2.11,11.2.7-h7affectedfixed in 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17
- 11.1.0 and later · before 11.1.13,11.1.10-h8affectedfixed in 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
- 10.2.0 and later · before 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34affectedfixed in 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34
Same product
paloaltonetworks: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-3400PAN-OS: Arbitrary File Creation Leads to OS Command Injection Vulnerability in GlobalProtectKEV100Now
- CVE-2017-15944Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to executeKEV98Now
- CVE-2024-0012PAN-OS: Authentication Bypass in the Management Web Interface (PAN-SA-2024-0015)KEV97Now
- CVE-2025-0108PAN-OS: Authentication Bypass in the Management Web InterfaceKEV95Now
- CVE-2026-0257PAN-OS: GlobalProtect Authentication Bypass VulnerabilitiesKEV90Now
- CVE-2024-9474PAN-OS: Privilege Escalation (PE) Vulnerability in the Web Management InterfaceKEV85Now
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Palo Alto Networks WildFire WF-500 and WF-500-B | 10.2.10-h36 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 10.2.13-h21 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 10.2.16-h7 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 10.2.18-h6 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 10.2.7-h34 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.1.10-h25 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.1.13-h5 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.1.15 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.1.4-h33 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.1.6-h32 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.1.7-h6 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.2.10-h6 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.2.12 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.2.4-h17 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 11.2.7-h13 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 12.1.4-h5 | Vendor (CNA) |
| Palo Alto Networks WildFire WF-500 and WF-500-B | 12.1.7 | Vendor (CNA) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2025-0111455 days apartPAN-OS: Authenticated File Read Vulnerability in the Management Web InterfaceKEV59Plan
- CVE-2025-0124398 days apartPAN-OS: Authenticated File Deletion Vulnerability on the Management Web Interface20Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
- CVE-2026-02570 days apartPAN-OS: GlobalProtect Authentication Bypass VulnerabilitiesKEV90Now
- CVE-2026-02650 days apartPAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled28Monitor
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-73 · External Control of File Name or PathCVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/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:Y/R:U/V:C/RE:M/U:Amber
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
- Leverage Alternate EncodingCAPEC-267likelihood: High · High
- Using Slashes and URL Encoding Combined to Bypass Validation LogicCAPEC-64likelihood: High · High
- URL EncodingCAPEC-72likelihood: High · High
- Manipulating Web Input to File System CallsCAPEC-76likelihood: High · Very High
- Using Escaped Slashes in Alternate EncodingCAPEC-78likelihood: High · High
- Using Slashes in Alternate EncodingCAPEC-79likelihood: High · High
- Using UTF-8 Encoding to Bypass Validation LogicCAPEC-80likelihood: High · High
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.