PAN-OS: Buffer Overflow Vulnerability

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Summary

CVECVE-2026-0329
StatePUBLISHED
Assignerpalo_alto
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-11 20:17:03 UTC
Updated2026-11-11 20:17:03 UTC
DescriptionA buffer overflow vulnerability in Palo Alto Networks PAN-OS® software enables 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. Cloud NGFW and Panorama are not affected by this vulnerability.

Risk And Classification

Primary CVSS: v4.0 4.6 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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:N/R:U/V:D/RE:M/U:Amber

Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary4.6MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/C...
4.0CNACVSS4.6MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/A...

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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:N/R:U/V:D/RE:M/U:Amber

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Palo Alto Networks Cloud NGFW unaffected All custom Not specified
CNA Palo Alto Networks PAN-OS affected 12.2.0 12.2.4-h2 custom Not specified
CNA Palo Alto Networks PAN-OS affected 12.1.0 12.1.10-h4 custom Not specified
CNA Palo Alto Networks PAN-OS affected 11.2.0 11.2.16-h2 custom Not specified
CNA Palo Alto Networks PAN-OS affected 11.1.0 11.1.16-h5 custom Not specified
CNA Palo Alto Networks PAN-OS affected 10.2.0 10.2.18-h14 custom Not specified
CNA Palo Alto Networks Prisma Access affected 12.1.0 12.1.10-h4 custom Not specified
CNA Palo Alto Networks Prisma Access affected 11.2.0 11.2.7-h24 custom Not specified
CNA Palo Alto Networks Prisma Access affected 10.2.0 10.2.10-h43 custom Not specified

References

ReferenceSourceLinkTags
security.paloaltonetworks.com/CVE-2026-0329 [email protected] security.paloaltonetworks.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: OpenAI (en)

CNA: Rotem Bar (internal reporter) (en)

CNA: Ben Nott (internal reporter) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-11-11T17:00:00.000ZInitial Publication.

Solutions

CNA: VERSION MINOR VERSION SUGGESTED SOLUTION Cloud NGFW No action needed. PAN-OS 12.2 12.2.0 through 12.2.4-h* Upgrade to 12.2.4-h2 or later. PAN-OS 12.1 12.1.8 through 12.1.10-h* Upgrade to 12.1.10-h4 or later. 12.1.5 through 12.1.7-h* Upgrade to 12.1.7-h12 or later. 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h14 or later. PAN-OS 11.2 11.2.15 through 11.2.16-h* Upgrade to 11.2.16-h2 or later. 11.2.11 through 11.2.13-h* Upgrade to 11.2.13-h5 or 11.2.16-h2 or later. 11.2.8 through 11.2.10-h* Upgrade to 11.2.10-h18 or 11.2.16-h2 or later. 11.2.5 through 11.2.7-h* Upgrade to 11.2.7-h24 or 11.2.16-h2 or later. 11.2.0 through 11.2.4-h* Upgrade to 11.2.4-h24 or 11.2.16-h2 or later. PAN-OS 11.1 11.1.14 through 11.1.16-h* Upgrade to 11.1.16-h5 or later. 11.1.11 through 11.1.13-h* Upgrade to 11.1.13-h17 or 11.1.16-h5 or later. 11.1.8 through 11.1.10-h* Upgrade to 11.1.10-h37 or 11.1.16-h5 or later. 11.1.7 through 11.1.7-h* Upgrade to 11.1.7-h13 or 11.1.16-h5 or later. 11.1.5 through 11.1.6-h* Upgrade to 11.1.6-h41 or 11.1.16-h5 or later. 11.1.0 through 11.1.4-h* Upgrade to 11.1.4-h39 or 11.1.16-h5 or later. PAN-OS 10.2 10.2.17 through 10.2.18-h* Upgrade to 10.2.18-h14 or later. 10.2.14 through 10.2.16-h* Upgrade to 10.2.16-h13 or 10.2.18-h14 or later. 10.2.11 through 10.2.13-h* Upgrade to 10.2.13-h28 or 10.2.18-h14 or later. 10.2.8 through 10.2.10-h* Upgrade to 10.2.10-h43 or 10.2.18-h14 or later. 10.2.0 through 10.2.7-h* Upgrade to 10.2.7-h40 or 10.2.18-h14 or later. All older Upgrade to a supported fixed version. unsupported PAN-OS versions Prisma Access 12.1 12.1.2 through 12.1.10-h* Upgrade to 12.1.10-h4 or later. Prisma Access 11.2 11.2.0 through 11.2.7-h* Upgrade to 11.2.7-h24 or later. Prisma Access 10.2 10.2.0 through 10.2.10-h* Upgrade to 10.2.10-h43 or later. * See the note under Product Status for information regarding Prisma Access upgrades.

Workarounds

CNA: Customers with a Threat Prevention subscription are provided with limited coverage against this vulnerability by enabling Threat ID 510051 and 510052 (from Applications and Threats content version 9171-10349 and later). For these Threat IDs to protect against attacks for this vulnerability: * Route incoming traffic for the MGT port through a DP port (https://docs.paloaltonetworks.com/best-practices/10-1/administrative-access-best-practices/administrative-access-best-practices/deploy-administrative-access-best-practices#id59206398-3dab-4b2f-9b4b-7ea500d036ba), e.g., enabling management profile on a DP interface for management access. * Replace the Certificate for Inbound Traffic Management (https://docs.paloaltonetworks.com/best-practices/10-1/administrative-access-best-practices/administrative-access-best-practices/deploy-administrative-access-best-practices#id112f7714-8995-4496-bbf9-781e63dec71c). * Decrypt inbound traffic to the management interface so the firewall can inspect it. (https://docs.paloaltonetworks.com/best-practices/10-1/administrative-access-best-practices/administrative-access-best-practices/deploy-administrative-access-best-practices#idbbd82587-17a2-42b4-9245-d3714e1e13a2) * Enable threat prevention on the inbound traffic to management services. Please note that this Threat ID requires SSL Decryption. Customers can mitigate the risk of this issue by taking the following actions. Disable CRL and OCSP Revocation Checking: * Navigate to Device > Certificate Management > Certificate Profile (https://docs.paloaltonetworks.com/ngfw/help/10-2/device/device-certificate-management-certificate-profile). * Click on the Certificate Profile assigned to the active IKE Gateway. * Uncheck Use CRL. * Uncheck Use OCSP. * Click OK and Commit the changes. Disable configured DNS proxy objects: * Navigate to Network > DNS Proxy (https://docs.paloaltonetworks.com/ngfw/help/10-1/network/network-dns-proxy). * Click on each configured DNS Proxy object. * Uncheck the Enable checkbox. * Click OK and Commit the changes.

Exploits

CNA: Palo Alto Networks is not aware of any malicious exploitation of this issue.

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