High 7.8Known exploited (CISA KEV)Published May 13, 2026

CVE-2026-0257PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

Updated under an hour ago (Oct 27, 2026, 2:23 AM ET)

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It affects Palo Alto Networks Cloud NGFW and 6 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since May 29, 2026; federal agencies had to remediate by Jun 1, 2026, and it is known to be used in ransomware. Treat that date as your deadline.

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Every CVE for Palo Alto Networks Cloud NGFW

Exploited in the last 30 days

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

CVSS: 7.8 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:A/AU:N/R:A/V:D/RE:M/U:Red
Weakness (CWE): CWE-565
Known exploited: Added to CISA KEV May 29, 2026; federal remediation due Jun 1, 2026; known ransomware useApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 95.01% (percentile 100)
Assigned by: palo_alto
NVD analysis: Analyzed
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Palo Alto Networks Cloud NGFW palo_alto_networks:cloud_ngfw (from the name)	all versions not affected	CNA record
Palo Alto Networks PAN-OS palo_alto_networks:pan-os	from 12.1.0 before 12.1.7, 12.1.4-h6; fixed at 12.1.7, fixed at 12.1.4-h6; from 11.2.0 before 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17; fixed at 11.2.12, fixed at 11.2.10-h7, fixed at 11.2.7-h14, fixed at 11.2.4-h17; from 11.1.0 before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33; fixed at 11.1.15, fixed at 11.1.13-h5, fixed at 11.1.10-h25, fixed at 11.1.7-h6, fixed at 11.1.6-h32, fixed at 11.1.4-h33; from 10.2.0 before 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34; fixed at 10.2.18-h6, fixed at 10.2.16-h7, fixed at 10.2.13-h21, fixed at 10.2.10-h36, fixed at 10.2.7-h34	CNA record
Palo Alto Networks Prisma Access palo_alto_networks:prisma_access (from the name)	from 10.2.0 before 10.2.10-h36; fixed at 10.2.10-h36; from 11.2.0 before 11.2.7-h13; fixed at 11.2.7-h13	CNA record
Siemens RUGGEDCOM APE1808 siemens:ruggedcom_ape1808 (from the name)	all versions	CISA ADP
paloaltonetworks pan-os paloaltonetworks:pan-os	before 10.2.7; 10.2.7; 10.2.7; 10.2.7; 10.2.7; 10.2.7; 10.2.7; 10.2.7; and 152 more ranges	NVD
paloaltonetworks prisma_access paloaltonetworks:prisma_access	all versions	NVD
siemens ruggedcom_ape1808_firmware siemens:ruggedcom_ape1808_firmware	all versions	NVD

References

References

https://security.paloaltonetworks.com/CVE-2026-0257	vendor-advisory
https://cert-portal.siemens.com/productcert/html/ssa-967325.html	third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-0257	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.