9.3 Critique Exploitée

CVE-2026-0300 Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability

Exploitation active constatée

· catalogue CISA KEV

Action attendue Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Until the vendor releases an official fix, the following workaround should be implemented: - Restrict User-ID Authentication Portal access to only trusted zones. - Disable User-ID Authentication Portal if not required. 5/13/2026: Palo Alto has released a variety of patches. If these are relevant to your environment, please apply the designated patch.

Campagnes de rançongiciel Non constatée à ce jour

Faiblesse CWE-787

Description

A buffer overflow vulnerability in the User-ID™ Authentication Portal (aka Captive Portal) service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. The risk of this issue is greatly reduced if you secure access to the User-ID™ Authentication Portal per the best practice guidelines https://knowledgebase.paloaltonetworks.com/KCSArticleDetail by restricting access to only trusted internal IP addresses. Prisma Access, Cloud NGFW and Panorama appliances are not impacted by this vulnerability.

Produits et versions touchés

Produit	Versions touchées	Corrigé en
Cloud NGFW	Versions non publiées
PAN-OS 12.1	12.1.0 → < 12.1.7	12.1.7
PAN-OS 11.2	11.2.0 → < 11.2.12	11.2.12
PAN-OS 11.1	11.1.0 → < 11.1.15	11.1.15
PAN-OS 10.2	10.2.0 → < 10.2.18-h6	10.2.18-h6
Prisma Access	Versions non publiées
RUGGEDCOM APE1808	Versions non publiées

Références

security.paloaltonetworks.com security.paloaltonetworks.com

Chronologie

Publiée 6 mai 2026
Ajoutée au catalogue KEV 6 mai 2026
Dernière modification 15 octobre 2026

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