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VulnerabilityKnown exploited · ransomwareExploit likelihood 96%
Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
CVE-2026-0257 · CISA KEV · May 29, 2026
Summary
Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.
From CISA, quoted as published. Check the source before acting.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA required action, quoted.
Affected products
| Vendor | Product |
|---|---|
| Palo Alto Networks | PAN-OS |
Why it's on these mode pages
- Maritime: Vendor table: Palo Alto Networks (network and remote-access gear used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Palo Alto Networks (network and remote-access gear used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Palo Alto Networks (network and remote-access gear used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Palo Alto Networks (network and remote-access gear used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Palo Alto Networks (network and remote-access gear used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Palo Alto Networks (network and remote-access gear used in every mode, all modes) (matched by rule)
Change history
- November 9, 2026: First collected by Watch
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