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CVE-2026-0310— PAN-OS: Buffer Overflow Vulnerability via XML Processing

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是美国Palo Alto Networks公司的一款集防火墙与入侵防御功能于一体的网络安全操作系统。 Palo Alto Networks PAN-OS 12.2.3之前版本、12.1.4-h10之前版本、11.2.4-h21之前版本、11.1.4-h36之前版本和10.2.7-h37之前版本存在缓冲区错误漏洞，该漏洞源于XML处理功能存在缓冲区溢出，未经身份验证的攻击者可通过网络访问管理Web或数据平面接口，导致VM-Series防火墙拒绝服务或在PA-

CVSS 5.2 · Medium EPSS 0.67% · P52

Affected Version Matrix 9

VendorProduct Version RangeStatus
Palo Alto Networks Cloud NGFW All affected
Palo Alto Networks PAN-OS 12.2.0< 12.2.3 affected
12.1.0< 12.1.4-h10 affected
11.2.0< 11.2.4-h21 affected
11.1.0< 11.1.4-h36 affected
10.2.0< 10.2.7-h37 affected
Palo Alto Networks Prisma Access 12.1.0< 12.1.4-h10 unaffected
11.2.0< 11.2.4-h21 affected
10.2.0< 10.2.7-h37 affected
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I. Basic Information for CVE-2026-0310

Vulnerability Information
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Vulnerability Title
PAN-OS: Buffer Overflow Vulnerability via XML Processing
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overflow vulnerability in the XML processing functionality of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to the management web or dataplane interface to cause a denial of service (DoS) condition on VM-Series firewalls or execute arbitrary code with root privileges on the PA-Series firewalls. The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 . Panorama is impacted by this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Palo Alto Networks PAN-OS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Palo Alto Networks PAN-OS是美国Palo Alto Networks公司的一款集防火墙与入侵防御功能于一体的网络安全操作系统。 Palo Alto Networks PAN-OS 12.2.3之前版本、12.1.4-h10之前版本、11.2.4-h21之前版本、11.1.4-h36之前版本和10.2.7-h37之前版本存在缓冲区错误漏洞，该漏洞源于XML处理功能存在缓冲区溢出，未经身份验证的攻击者可通过网络访问管理Web或数据平面接口，导致VM-Series防火墙拒绝服务或在PA-
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Palo Alto Networks Cloud NGFW All -
Palo Alto Networks PAN-OS 12.2.0 ~ 12.2.3 cpe:2.3:o:palo_alto_networks:pan-os:12.2.2:*:*:*:*:*:*:*
Palo Alto Networks Prisma Access 11.2.0 ~ 11.2.4-h21 -

II. Public POCs for CVE-2026-0310

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III. Intelligence Information for CVE-2026-0310

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Vendor Advisories for CVE-2026-0310 (1)

Same Patch Batch · Palo Alto Networks · 2026-09-10 · 9 CVEs total

CVE-2026-0307 5.9 MEDIUM GlobalProtect App: Local Privilege Escalation Vulnerabilities
CVE-2026-0306 5.8 MEDIUM Prisma Access Agent: EndPoint DLP Bypass Vulnerability on Windows
CVE-2026-0304 4.8 MEDIUM Cortex XDR Broker VM: Privilege Escalation Vulnerability
CVE-2026-0305 4.3 MEDIUM Prisma Access Agent: Information Disclosure Vulnerability on Linux
CVE-2026-0309 4.0 MEDIUM PAN-OS: Authenticated Command Injection in CLI with Luna HSM Configuration
CVE-2026-0303 2.4 LOW Checkov by Prisma Cloud: Code Execution via Auto-Loaded Configuration File
CVE-2026-0302 1.1 LOW Checkov by Prisma Cloud: OS Command Injection Vulnerability
CVE-2026-0308 0.4 LOW PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface

IV. Related Vulnerabilities

Same product: Cloud NGFW
Same vendor: Palo Alto Networks
Same weakness: CWE-787