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Unit 42

Threat Brief: Active Exploitation of PAN-OS CVE-2026-0257 (opens in new tab)

Covers 2 stories See all stories this covers including Critical SharePoint Zero-Day (CVE-2025-53770) Under Active ExploitationCovered by 3 sources See all sources covering this story including The Hacker News, Security Affairs

Covers 2 related stories

cisa.gov·

Critical SharePoint Zero-Day (CVE-2025-53770) Under Active Exploitation

Discussed on Hacker News
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Rapid7 Cybersecurity Blog·

Rapid7 Observed Exploitation of PAN-OS GlobalProtect Authentication Bypass Vulnerability (CVE-2026-0257)

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Covered in 3 articles

The Hacker News·

Palo Alto Warns of Active Exploitation of PAN-OS GlobalProtect VPN Flaw

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Security Affairs·

Palo Alto Warns of Exploitation of VPN Bypass Exploits (CVE-2026-0257) in PAN-OS Flaw

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Arctic Wolf·

Arctic Wolf Observes an Increase in Palo Alto Networks GlobalProtect Authentication Bypass Exploitation via CVE-2026-0257

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