Pan Os
CVE-2026-0227
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessSend crafted network packets to PAN-OS firewall
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ExploitTrigger unhandled exception in packet processing
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ImpactFirewall enters maintenance mode after repeated attempts
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Unusual condition handling
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| Exploitation Conditions | No special conditions — remote unauthenticated exploitation against PAN-OS firewalls with default network accessibility. Requires repeated packet transmission to trigger maintenance mode entry. |
| Impact | CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. Exploitable via remote/network. |
| Exploit ScenarioDerived | A remote attacker without authentication could exploit this flaw, the firewall entering into maintenance mode. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Unauthenticated remote attackers can crash Palo Alto Networks PAN-OS firewalls through repeated requests, forcing the devices into maintenance mode and causing denial of service. This vulnerability affects Palo Alto firewalls and Prisma Access deployments with no available patch, creating ongoing operational risk. The attack requires no authentication or user interaction and can be exploited over the network.
Earlier versions of this analysis (1)
A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode. [CVSS 7.5 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affects your stack
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Technical ContextAI · show details
Classified as CWE-754 (Improper Check for Unusual or Exceptional Conditions). Affects Pan-Os. A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.
Executive ViewAI
CVE-2026-0227 presents notable security risk rated CVSS 7.5. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and consider compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
An authentication bypass in Palo Alto Networks PAN-OS software enables an unauthenticated attacker with network access t
Palo 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
A privilege escalation vulnerability in Palo Alto Networks PAN-OS software allows a PAN-OS administrator with access to
Palo Alto Networks PAN-OS management web interface contains an authentication bypass allowing unauthenticated attackers
Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by lev
Remote Code Execution in PAN-OS 7.1.18 and earlier, PAN-OS 8.0.11-h1 and earlier, and PAN-OS 8.1.2 and earlier with Glob
Remote code execution in Palo Alto Networks PAN-OS User-ID Authentication Portal (Captive Portal) allows unauthenticated
GNU wget before 1.18 allows remote servers to write to arbitrary files by redirecting a request from HTTP to a crafted F
Buffer overflow in the management web interface in Palo Alto Networks PAN-OS before 5.0.20, 5.1.x before 5.1.13, 6.0.x b
Authentication bypass in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS allows remote attackers to es
A denial of service flaw was found in OpenSSL 0.9.8, 1.0.1, 1.0.2 through 1.0.2h, and 1.1.0 in the way the TLS/SSL proto
Authenticated attackers holding high-privilege administrative access to the PAN-OS management interface can execute arbi
GitHub PoC
Exploit-DB