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CVE-2026-0321— PAN-OS: Denial of Service (DoS) Vulnerabilities in Network Services

Quick assessment

Affected
Palo Alto Networks Cloud NGFW
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Palo Alto Networks PAN-OS® 软件中存在拒绝服务（DoS）漏洞，允许具有网络访问权限但未经验证的攻击者通过向数据平面接口发送或经由数据平面接口转发特制的网络流量，导致拒绝服务（DoS）状况。反复尝试触发此条件会导致防火墙进入维护模式。 Cloud NGFW 和 Panorama 不受此漏洞影响。

CVSS 6.6 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 9

VendorProduct Version RangeStatus
Palo Alto Networks Cloud NGFW All unaffected
Palo Alto Networks PAN-OS 12.2.0< 12.2.4 affected
12.1.0< 12.1.10-h2 affected
11.2.0< 11.2.16 affected
11.1.0< 11.1.16-h3 affected
10.2.0< 10.2.18-h12 affected
Palo Alto Networks Prisma Access 12.1.0< 12.1.7-h8 affected
11.2.0< 11.2.7-h21 affected
10.2.0< 10.2.10-h41 affected
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I. Basic Information for CVE-2026-0321

Vulnerability Information
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Vulnerability Title
PAN-OS: Denial of Service (DoS) Vulnerabilities in Network Services
Source: CVE Program / CVE List V5
Vulnerability Description
Denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition by sending specially crafted network traffic to or through a dataplane interface. Repeated attempts to trigger this condition result in the firewall entering maintenance mode. Cloud NGFW and Panorama are not affected by this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Palo Alto Networks Cloud NGFW - -
Palo Alto Networks PAN-OS 12.2.0 ~ 12.2.4 cpe:2.3:o:palo_alto_networks:pan-os:12.2.3:*:*:*:*:*:*:*
Palo Alto Networks Prisma Access 12.1.0 ~ 12.1.7-h8 -

II. Public POCs for CVE-2026-0321

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III. Intelligence Information for CVE-2026-0321

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Vendor Advisories for CVE-2026-0321 (1)

Same Patch Batch · Palo Alto Networks · 2026-10-14 · 12 CVEs total

CVE-2026-0322 8.5 HIGH PAN-OS: Authenticated Remote Code Execution (RCE) in the Management Interface
CVE-2026-0313 6.1 MEDIUM Cortex XSOAR: OS Command Injection Vulnerability
CVE-2026-0315 5.9 MEDIUM GlobalProtect App: Local Privilege Escalation Vulnerability on macOS
CVE-2026-0320 5.7 MEDIUM PAN-OS: Authenticated Admin Command Injection Vulnerability
CVE-2026-0319 4.9 MEDIUM PAN-OS: Improper Input Handling Vulnerability
CVE-2026-0318 4.6 MEDIUM PAN-OS: Denial of Service (DoS) on Panorama
CVE-2026-0314 4.3 MEDIUM GlobalProtect App: Local Denial of Service (DoS) on Windows
CVE-2026-0312 4.3 MEDIUM Checkov by Prisma Cloud: Path Traversal Vulnerabilities
CVE-2026-0317 1.2 LOW PAN-OS: Denial of Service Vulnerability
CVE-2026-0311 1.1 LOW Checkov by Prisma Cloud: Server-Side Request Forgery Vulnerability
CVE-2026-0316 0.4 LOW PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability

IV. Related Vulnerabilities

Same product: Cloud NGFW
Same vendor: Palo Alto Networks
Same weakness: CWE-754

V. Comments for CVE-2026-0321

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