Summary
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.
- Vendor
- Palo Alto Networks
- Product
- PAN-OS
- Added to KEV
- May 6, 2026
- Remediation due
- May 9, 2026 (US federal deadline)
- Ransomware use
- Not known
- Weakness
- CWE-787
- EPSS
- 41.7% as of Nov 12
In the news
- No Asia-Pacific article names this CVE yet.
Linked
Actors named alongside it:
none
Incidents exploiting it:
- none recorded
References