PAN-OS: Firewall Denial of Service (DoS) when GTP Security is Disabled
A packet processing mechanism in Palo Alto Networks PAN-OS software enables a remote attacker to reboot hardware-based firewalls. Repeated attacks eventually cause the firewall to enter maintenance mode, which requires manual intervention to bring the firewall back online. This affects the following hardware firewall models: - PA-5400 Series firewalls - PA-7000 Series firewalls
- Published
- Apr 10, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.9% · 58th percentile
- CWE
- CWE-20
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.9%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.5
- CNA · palo_alto
- 7.5
- agree
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 | pa-5410 | cpe:2.3:h:paloaltonetworks:pa-5410 |
| paloaltonetworks | pa-5420 | cpe:2.3:h:paloaltonetworks:pa-5420 |
| paloaltonetworks | pa-5430 | cpe:2.3:h:paloaltonetworks:pa-5430 |
| paloaltonetworks | pa-5440 | cpe:2.3:h:paloaltonetworks:pa-5440 |
| paloaltonetworks | pa-5445 | cpe:2.3:h:paloaltonetworks:pa-5445 |
| paloaltonetworks | pa-7050 | cpe:2.3:h:paloaltonetworks:pa-7050 |
| paloaltonetworks | pa-7080 | cpe:2.3:h:paloaltonetworks:pa-7080 |
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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-os9.0.0 and later · up to 9.0.16 inclusive
- paloaltonetworks pan-os9.1.0 and later · before 9.1.17
- paloaltonetworks pan-os10.1.0 and later · before 10.1.12
- paloaltonetworks pan-os10.2.0 and later · before 10.2.8
- paloaltonetworks pan-os11.0.0 and later · before 11.0.3
- paloaltonetworks pan-os9.0.17
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 Cloud NGFW
- Allnot affected
Palo Alto Networks PAN-OS
- 11.1.0not affected
- 9.0.0 and later · before 9.0.17-h4affectedfixed in 9.0.17-h4
- 9.1.0 and later · before 9.1.17affectedfixed in 9.1.17
- 10.1.0 and later · before 10.1.12affectedfixed in 10.1.12
- 10.2.0 and later · before 10.2.8affectedfixed in 10.2.8
- 11.0.0 and later · before 11.0.3affectedfixed in 11.0.3
Palo Alto Networks Prisma Access
- Allnot affected
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 PAN-OS | 10.1.12 | Vendor (CNA) |
| Palo Alto Networks PAN-OS | 10.2.8 | Vendor (CNA) |
| Palo Alto Networks PAN-OS | 11.0.3 | Vendor (CNA) |
| Palo Alto Networks PAN-OS | 9.0.17-h4 | Vendor (CNA) |
| Palo Alto Networks PAN-OS | 9.1.17 | 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-2024-34002 days apartPAN-OS: Arbitrary File Creation Leads to OS Command Injection Vulnerability in GlobalProtectKEV100Now
- CVE-2024-591391 days apartPAN-OS: Improper Input Validation Vulnerability in PAN-OS27Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
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.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
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)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
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✗ → ✓
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References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.