EUVD-2026-30108
GHSA-3mc4-hxgv-pc7g
Severity by source
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/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:C/RE:M/U:Amber
Primary rating from Vendor (palo_alto) · only source for this CVE.
CVSS VectorVendor: palo_alto
Lifecycle Timeline
5DescriptionCVE.org
Multiple 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.
Panorama and Cloud NGFW are not impacted by these vulnerabilities.
AnalysisAI
Multiple denial-of-service conditions in Palo Alto Networks PAN-OS allow unauthenticated remote attackers to crash or degrade firewall availability by sending specially crafted network traffic, with a high availability impact (VA:H) on the vulnerable system. Affected deployments span PAN-OS 10.2, 11.1, 11.2, and 12.1 branches as well as Prisma Access; vendor explicitly states Panorama and Cloud NGFW are not impacted, though Cloud NGFW appears in CPE strings - a discrepancy worth verifying. No public exploit identified at time of analysis, EPSS is very low (0.05%, 16th percentile), and SSVC classifies exploitation as none with non-automatable attack patterns, collectively suggesting a patch-cycle priority rather than an emergency response.
Technical ContextAI
PAN-OS is Palo Alto Networks' proprietary operating system underpinning its next-generation firewall (NGFW) hardware and virtual appliances, as well as the Prisma Access cloud-delivered security service. The root cause is CWE-754 (Improper Check for Unusual or Exceptional Conditions), meaning the PAN-OS network processing code fails to properly handle malformed, unexpected, or edge-case input in certain protocol parsers or traffic handlers. When such input is received, the affected process does not gracefully recover, resulting in an availability loss (DoS). The CVSS 4.0 vector AT:N (no attack requirements) indicates no special non-default configuration is required on the firewall to trigger the condition, though the SSVC Automatable:no determination suggests that producing reliably effective crafted traffic requires specific knowledge or targeting rather than generic scanning. Affected CPE strings cover cpe:2.3:a:palo_alto_networks:pan-os and cpe:2.3:a:palo_alto_networks:prisma_access across broad version ranges.
RemediationAI
Upgrade to a vendor-patched release per the affected version matrix: for PAN-OS 10.2, target 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, or 10.2.7-h34 depending on the current maintenance track; for PAN-OS 11.1, target 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, or 11.1.4-h33; for PAN-OS 11.2, target 11.2.12, 11.2.10-h6, 11.2.7-h13, or 11.2.4-h17; for PAN-OS 12.1, target 12.1.7 or 12.1.4-h5. For Prisma Access, target 10.2.10-h36 (10.2 track) or 11.2.7-h13 (11.2 track). Full details and download links are available at the official vendor advisory: https://security.paloaltonetworks.com/CVE-2026-0262. As an interim compensating control while patching is scheduled, restrict network access to PAN-OS management interfaces using management interface security profiles or out-of-band management networks to reduce the attack surface; note this may not fully mitigate vulnerabilities triggered via data-plane traffic. Panorama and Cloud NGFW deployments do not require action per the vendor advisory.
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External POC / Exploit Code
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