CVE-2026-0329: PAN-OS: Buffer Overflow Vulnerability

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 10 Nov 2026. If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?

0.4%

EPSS score, percentile 37.3 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

4.6 Medium

CVSS v4.0 base score, given by the CNA

What should I do?

VERSION MINOR VERSION SUGGESTED SOLUTION Cloud NGFW No action needed. Full textSolution from the CVE record.

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

• from 12.2.0 to before 12.2.4-h2
• from 12.1.0 to before 12.1.10-h4
• from 11.2.0 to before 11.2.16-h2
• from 12.1.0 to before 12.1.10-h4
• from 11.2.0 to before 11.2.7-h24
• from 10.2.0 to before 10.2.10-h43

Unaffected All; from 12.2.4-h2; from 12.1.10-h4; from 12.1.7-h12; from 12.1.4-h14; from 11.2.16-h2; and 7 more

Versions by product

Source: CISA KEV 2026.11.10, as of 10 Nov 2026; FIRST EPSS, as of 12 Nov 2026; CVE List, as of 12 Nov 2026. About the data.

Description

PAN-OS: Buffer Overflow Vulnerability

A 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.

Source: CVE List, as of 12 Nov 2026. About the data.

What to do

Advisories and patches

• security.paloaltonetworks.com (Vendor advisory)

Solution (from the CVE record)

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…

Workaround (from the CVE record)

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 o…

This summary is based on the CVE record as of 12 Nov 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Source: CVE List, as of 12 Nov 2026. About the data.

Timeline

Known exploited Palo Alto Networks vulnerabilities

• CVE-2026-0322: Palo Alto Networks PAN-OS Code Injection Vulnerability (added 14 Oct 2026)
• CVE-2026-0257: Palo Alto Networks PAN-OS Authentication Bypass Vulnerability (added 29 May 2026)
• CVE-2026-0300: Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability (added 6 May 2026)
• CVE-2025-0111: Palo Alto Networks PAN-OS File Read Vulnerability (added 20 Feb 2025)
• CVE-2025-0108: Palo Alto Networks PAN-OS Authentication Bypass Vulnerability (added 18 Feb 2025)