Exploited Vulnerabilities Daily
🌐 English

Home › Palo Alto Networks

CVE-2026-0300: Palo Alto Networks PAN-OS

EPSS31.7%No. 997 of 1739 in KEV
CVE year2026listed the same year
Same vendor in KEV15
Same product12
FieldValue
VendorPalo Alto Networks
ProductPAN-OS
NamePalo Alto Networks PAN-OS Out-of-bounds Write Vulnerability
Added to KEV2026-05-06
US federal due date2026-05-09
Ransomware useUnknown
CWECWE-787

CISA description

Palo Alto Networks PAN-OS contains an out-of-bounds write vulnerability in the User-ID Authentication Portal (aka Captive Portal) service that can allow an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets.

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2026-0257Palo Alto Networks PAN-OS2026-05-2996.8%Known
CVE-2025-0111Palo Alto Networks PAN-OS2025-02-201.9%Unknown
CVE-2025-0108Palo Alto Networks PAN-OS2025-02-1898.4%Unknown
CVE-2024-3393Palo Alto Networks PAN-OS2024-12-3029.1%Unknown
CVE-2024-9474Palo Alto Networks PAN-OS2024-11-1894.8%Known
CVE-2024-0012Palo Alto Networks PAN-OS2024-11-1899.8%Known
CVE-2024-3400Palo Alto Networks PAN-OS2024-04-1299.9%Known
CVE-2022-0028Palo Alto Networks PAN-OS2022-08-222.5%Unknown
CVE-2017-15944Palo Alto Networks PAN-OS2022-08-1898.3%Unknown
CVE-2020-2021Palo Alto Networks PAN-OS2022-03-254.3%Known
CVE-2019-1579Palo Alto Networks PAN-OS2022-01-1046.2%Known

NVD — CVE-2026-0300

Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page

A Palo Alto Networks PAN-OS vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2026-05-06.