CVE-2026-0326

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-0326", "assignerOrgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0", "state": "PUBLISHED", "assignerShortName": "palo_alto", "dateReserved": "2025-11-03T20:46:28.340Z", "datePublished": "2026-11-11T19:50:29.708Z", "dateUpdated": "2026-11-11T19:50:29.708Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0", "shortName": "palo_alto", "dateUpdated": "2026-11-11T19:50:29.708Z"}, "title": "PAN-OS: Buffer Overflow Vulnerability in Protocol and Service Processing", "datePublic": "2026-11-11T17:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-100", "descriptions": [{"lang": "en", "value": "CAPEC-100 Overflow Buffers"}]}], "affected": [{"vendor": "Palo Alto Networks", "product": "Cloud NGFW", "versions": [{"status": "affected", "version": "All", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Palo Alto Networks", "product": "PAN-OS", "versions": [{"status": "affected", "version": "12.2.0", "lessThan": "12.2.4-h2", "changes": [{"at": "12.2.4-h2", "status": "unaffected"}], "versionType": "custom"}, {"status": "affected", "version": "12.1.0", "lessThan": "12.1.10-h4", "changes": [{"at": "12.1.10-h4", "status": "unaffected"}], "versionType": "custom"}, {"status": "affected", "version": "11.2.0", "lessThan": "11.2.16-h2", "changes": [{"at": "11.2.16-h2", "status": "unaffected"}], "versionType": "custom"}, {"status": "affected", "version": "11.1.0", "lessThan": "11.1.16-h5", "changes": [{"at": "11.1.16-h5", "status": "unaffected"}], "versionType": "custom"}], "defaultStatus": "unaffected", "cpes": ["cpe:2.3:o:palo_alto_networks:pan-os:12.2.4:h1:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:12.2.4:-:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:12.2.3:*:*:*:*:*:*:*", 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"cpe:2.3:o:palo_alto_networks:pan-os:11.1.16:h1:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.16:-:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.15:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.14:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.13:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.12:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.11:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.10:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.9:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.8:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.6:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.5:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.4:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.3:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.2:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.1:*:*:*:*:*:*:*", "cpe:2.3:o:palo_alto_networks:pan-os:11.1.0:*:*:*:*:*:*:*"]}, {"vendor": "Palo Alto Networks", "product": "Prisma Access", "versions": [{"status": "unaffected", "version": "All", "versionType": "custom"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:palo_alto_networks:cloud_ngfw:*:*:*:*:*:*:*:*", "versionStartIncluding": "all", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*", "versionEndExcluding": "12.2.4-h2", "versionStartIncluding": "12.2.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*", "versionEndExcluding": "12.1.10-h4", "versionStartIncluding": "12.1.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*", "versionEndExcluding": "11.2.16-h2", "versionStartIncluding": "11.2.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*", "versionEndExcluding": "11.1.16-h5", "versionStartIncluding": "11.1.16", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}], "descriptions": [{"lang": "en", "value": "A buffer overflow vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to disrupt service processing by causing a service process crash or memory corruption.\n\n\n\nPanorama and Prisma\u00ae Access are not affected by this vulnerability.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p></p><p><span>A buffer overflow vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to disrupt service processing by causing a service process crash or memory corruption.</span></p><p><span>Panorama and Prisma\u00ae Access are not affected by this vulnerability.</span></p><p></p>"}]}], "references": [{"url": "https://security.paloaltonetworks.com/CVE-2026-0326", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "Safety": "NOT_DEFINED", "Automatable": "NO", "Recovery": "USER", "valueDensity": "DIFFUSE", "vulnerabilityResponseEffort": "MODERATE", "providerUrgency": "AMBER", "version": "4.0", "baseSeverity": "LOW", "baseScore": 1.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber"}}], "configurations": [{"lang": "eng", "value": "Customers are impacted if the following conditions are true:\n\n 1. SCTP is enabled or\n\n 2. DNS proxy object is configured and enabled on the firewall or\n\n 3. OSPFv3 routing on an IPv6 interface is enabled.\n\nTo check if SCTP is enabled: \n\n * Navigate to Device > Setup > Management (https://docs.paloaltonetworks.com/ngfw/help/10-2/device/device-setup-management) > General Settings and check if SCTP Security (https://docs.paloaltonetworks.com/service-providers/10-2/mobile-network-infrastructure-getting-started/sctp/configure-sctp-security) is checked.\n \n * Navigate to Policies > Security (https://docs.paloaltonetworks.com/ngfw/help/10-2/policies/policies-security), inspect your active policy rules, and verify if an SCTP Protection profile (https://docs.paloaltonetworks.com/ngfw/help/10-1/objects/objects-security-profiles-sctp-protection) is applied under the rule's Actions tab to a rule allowing SCTP traffic.\n\nVerify DNS Proxy Status:\n\n * Navigate to Network > DNS Proxy (https://docs.paloaltonetworks.com/ngfw/help/10-1/network/network-dns-proxy).\n \n * Review all configured DNS Proxy objects.\n \n * Click to open each DNS Proxy object and verify whether the Enable checkbox is selected.\n\nVerify OSPFv3 routing on IPv6\n\n * Navigate to Network > Virtual Routers (https://docs.paloaltonetworks.com/ngfw/help/10-2/network/network-virtual-routers) (or Advanced Routing (https://docs.paloaltonetworks.com/ngfw/networking/advanced-routing)), open your active virtual router, and check under OSPFv3 (https://docs.paloaltonetworks.com/ngfw/networking/ospf/configure-ospfv3) to confirm if OSPFv3 routing is enabled on any IPv6 interface or subinterface.\n\n * Navigate to Network > Network Profiles > OSPFv3 Auth (https://docs.paloaltonetworks.com/ngfw/networking/advanced-routing/create-ospfv3-routing-profiles) (or view the profile attached to the OSPFv3 area/interface). Inspect the SPI configuration (https://docs.paloaltonetworks.com/ngfw/networking/ospf/configure-ospfv3) to see if: ESP Authentication is set to NONE.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Customers are impacted if the following conditions are true:</p><ol><li><p>SCTP is enabled&nbsp;<b>or</b></p></li><li><p>DNS proxy object is configured and enabled on the firewall&nbsp;<b>or</b></p></li><li><p>OSPFv3 routing on an IPv6 interface is enabled.</p></li></ol><div>To check if SCTP is enabled:&nbsp;<br><ul><li>Navigate to <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/help/10-2/device/device-setup-management\">Device &gt; Setup &gt; Management</a> &gt; General Settings and check if <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/service-providers/10-2/mobile-network-infrastructure-getting-started/sctp/configure-sctp-security\">SCTP Security</a> is checked.<br></li><li>Navigate to <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/help/10-2/policies/policies-security\">Policies &gt; Security</a>, inspect your active policy rules, and verify if an <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/help/10-1/objects/objects-security-profiles-sctp-protection\">SCTP Protection profile</a> is applied under the rule's Actions tab to a rule allowing SCTP traffic.</li></ul>Verify DNS Proxy Status:<br><ul><li>Navigate to Network &gt; <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/help/10-1/network/network-dns-proxy\">DNS Proxy</a>.<br></li><li>Review all configured DNS Proxy objects.<br></li><li>Click to open each DNS Proxy object and verify whether the <b>Enable</b> checkbox is selected.</li></ul>Verify OSPFv3 routing on IPv6<br><ul><li>Navigate to <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/help/10-2/network/network-virtual-routers\">Network &gt; Virtual Routers</a> (or <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/networking/advanced-routing\">Advanced Routing</a>), open your active virtual router, and check under <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/networking/ospf/configure-ospfv3\">OSPFv3</a> to confirm if OSPFv3 routing is enabled on any IPv6 interface or subinterface.</li><li><p>Navigate to <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/networking/advanced-routing/create-ospfv3-routing-profiles\">Network &gt; Network Profiles &gt; OSPFv3 Auth</a> (or view the profile attached to the OSPFv3 area/interface). Inspect the <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/networking/ospf/configure-ospfv3\">SPI configuration</a> to see if:&nbsp;ESP Authentication is set to NONE.</p></li></ul></div><b></b>"}]}], "workarounds": [{"lang": "eng", "value": "Customers can mitigate the risk of this issue by taking the following actions.\n\nDetach the SCTP Protection profile from active Security Policy rules allowing SCTP traffic.\n\nDisable configured DNS proxy objects:\n\n * Navigate to Network > DNS Proxy (https://docs.paloaltonetworks.com/ngfw/help/10-1/network/network-dns-proxy).\n\n * Click on each configured DNS Proxy object.\n\n * Uncheck the Enable checkbox.\n\n * Click OK and Commit the changes.\n\nUpdate any active OSPFv3 Auth Profiles under Network > Network Profiles > OSPFv3 Auth (https://docs.paloaltonetworks.com/ngfw/networking/advanced-routing/create-ospfv3-routing-profiles) to use standard cryptographic authentication other than ESP-NULL.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Customers can mitigate the risk of this issue by taking the following actions.</p><p>Detach the SCTP Protection profile from active Security Policy rules allowing SCTP traffic.</p><p>Disable configured DNS proxy objects:</p><ul><li><p>Navigate to&nbsp;<a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/help/10-1/network/network-dns-proxy\">Network &gt; DNS Proxy</a>.</p></li></ul><ul><li><p>Click on each configured DNS Proxy object.</p></li></ul><ul><li><p>Uncheck the&nbsp;<b>Enable</b>&nbsp;checkbox.</p></li></ul><ul><li><p>Click&nbsp;<b>OK</b>&nbsp;and <b>C</b><b>ommit</b>&nbsp;the changes.</p></li></ul><p>Update any active OSPFv3 Auth Profiles under&nbsp;<a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.paloaltonetworks.com/ngfw/networking/advanced-routing/create-ospfv3-routing-profiles\">Network &gt; Network Profiles &gt; OSPFv3 Auth</a>&nbsp; to use standard cryptographic authentication other than ESP-NULL.<br></p>"}]}], "solutions": [{"lang": "eng", "value": "VERSION MINOR VERSION SUGGESTED SOLUTION\nCloud NGFW Customers who prefer to upgrade can work with Palo Alto\n Networks support to schedule an on-demand software upgrade.\nPAN-OS 12.2 12.2.0 through 12.2.4-h* Upgrade to 12.2.4-h2 or later.\nPAN-OS 12.1 12.1.0 through 12.1.10-h* Upgrade to 12.1.10-h4 or later.\nPAN-OS 11.2 11.2.0 through 11.2.16-h* Upgrade to 11.2.16-h2 or later.\nPAN-OS 11.1 11.1.0 through 11.1.16-h* Upgrade to 11.1.16-h5 or later.\nAll older Upgrade to a supported fixed version.\nunsupported\nPAN-OS versions\nPrisma Access No action needed.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<table class=\"tbl\"><thead><tr><th>Version<br></th><th>Minor Version<br></th><th>Suggested Solution<br></th></tr></thead><tbody><tr><td>Cloud NGFW</td><td></td><td>Customers who prefer to upgrade can work with Palo Alto Networks support to schedule an on-demand software upgrade.</td></tr><tr>\n <td>PAN-OS 12.2<br></td>\n <td>12.2.0 through 12.2.4-h*</td>\n <td>Upgrade to 12.2.4-h2 or later.</td>\n </tr><tr>\n <td>PAN-OS 12.1<br></td>\n <td>12.1.0 through 12.1.10-h*</td>\n <td>Upgrade to 12.1.10-h4 or later.</td>\n </tr><tr>\n <td>PAN-OS 11.2<br></td>\n <td>11.2.0 through 11.2.16-h*</td>\n <td>Upgrade to 11.2.16-h2 or later.</td>\n </tr><tr>\n <td>PAN-OS 11.1<br></td>\n <td>11.1.0 through 11.1.16-h*</td>\n <td>Upgrade to 11.1.16-h5 or later.</td>\n </tr><tr><td>All older<br>unsupported<br>PAN-OS versions</td><td>&nbsp;</td><td>Upgrade to a supported fixed version.</td></tr><tr><td>Prisma Access<br></td><td></td><td>No action needed.</td></tr></tbody></table>"}]}], "exploits": [{"lang": "en", "value": "Palo Alto Networks is not aware of any malicious exploitation of this issue.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Palo Alto Networks is not aware of any malicious exploitation of this issue."}]}], "timeline": [{"time": "2026-11-11T17:00:00.000Z", "lang": "en", "value": "Initial Publication"}], "credits": [{"lang": "en", "value": "OpenAI", "type": "finder"}, {"lang": "en", "value": "Rotem Bar (internal reporter)", "type": "finder"}, {"lang": "en", "value": "Ben Nott (internal reporter)", "type": "finder"}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "x_affectedList": ["PAN-OS 12.2.4-h1", "PAN-OS 12.2.4", "PAN-OS 12.2.3", "PAN-OS 12.2.2", "PAN-OS 12.1.10-h3", "PAN-OS 12.1.10-h2", "PAN-OS 12.1.10", "PAN-OS 12.1.9", "PAN-OS 12.1.8", "PAN-OS 12.1.7-h12", "PAN-OS 12.1.7-h11", "PAN-OS 12.1.7-h9", "PAN-OS 12.1.7-h8", "PAN-OS 12.1.7-h6", "PAN-OS 12.1.7-h5", "PAN-OS 12.1.7-h3", "PAN-OS 12.1.7-h2", "PAN-OS 12.1.7-h1", "PAN-OS 12.1.7", "PAN-OS 12.1.6", "PAN-OS 12.1.5", "PAN-OS 12.1.4-h14", "PAN-OS 12.1.4-h13", "PAN-OS 12.1.4-h12", "PAN-OS 12.1.4-h11", "PAN-OS 12.1.4-h10", "PAN-OS 12.1.4-h9", "PAN-OS 12.1.4-h8", "PAN-OS 12.1.4-h7", "PAN-OS 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