CVE-2026-0257: Used in ransomware campaigns — CISA KEV

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.

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.EPSS Score: 95.64% exploitation probability (next 30 days)

03Notes & references

• security.paloaltonetworks.com — https://security.paloaltonetworks.com/CVE-2026-0257
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/html/ssa-967325.html
• www.cisa.gov — https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
paloaltonetworks	pan	os — < 10.2.7
paloaltonetworks	pan	os — 10.2.7
paloaltonetworks	pan	os — 10.2.8
paloaltonetworks	pan	os — 10.2.9
paloaltonetworks	pan	os — 10.2.10
paloaltonetworks	pan	os — 10.2.11
paloaltonetworks	pan	os — 10.2.12
paloaltonetworks	pan	os — 10.2.13
paloaltonetworks	pan	os — 10.2.14
paloaltonetworks	pan	os — 10.2.15
paloaltonetworks	pan	os — 10.2.16
paloaltonetworks	pan	os — 10.2.17
paloaltonetworks	pan	os — 10.2.18
paloaltonetworks	pan	os — 11.1.0
paloaltonetworks	pan	os — 11.1.1
paloaltonetworks	pan	os — 11.1.2
paloaltonetworks	pan	os — 11.1.3
paloaltonetworks	pan	os — 11.1.4
paloaltonetworks	pan	os — 11.1.5
paloaltonetworks	pan	os — 11.1.6
paloaltonetworks	pan	os — 11.1.7
paloaltonetworks	pan	os — 11.1.8
paloaltonetworks	pan	os — 11.1.9
paloaltonetworks	pan	os — 11.1.10
paloaltonetworks	pan	os — 11.1.11
paloaltonetworks	pan	os — 11.1.12
paloaltonetworks	pan	os — 11.1.13
paloaltonetworks	pan	os — 11.1.14
paloaltonetworks	pan	os — 11.2.0
paloaltonetworks	pan	os — 11.2.1
paloaltonetworks	pan	os — 11.2.2
paloaltonetworks	pan	os — 11.2.3
paloaltonetworks	pan	os — 11.2.4
paloaltonetworks	pan	os — 11.2.5
paloaltonetworks	pan	os — 11.2.6
paloaltonetworks	pan	os — 11.2.7
paloaltonetworks	pan	os — 11.2.8
paloaltonetworks	pan	os — 11.2.9
paloaltonetworks	pan	os — 11.2.10
paloaltonetworks	pan	os — 11.2.11
paloaltonetworks	pan	os — 12.1.2
paloaltonetworks	pan	os — 12.1.3
paloaltonetworks	pan	os — 12.1.4
paloaltonetworks	pan	os — 12.1.5
paloaltonetworks	pan	os — 12.1.6
paloaltonetworks	prisma_access	unspecified
siemens	ruggedcom_ape1808_firmware	unspecified

06Detection

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.