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CVE-2020-2021 is an authentication bypass vulnerability in Palo Alto Networks PAN-OS SAML authentication caused by improper verification of SAML signatures when SAML authentication is enabled and the 'Validate Identity Provider Certificate' option is disabled. Under this misconfiguration, PAN-OS does not correctly validate the identity provider signing context, enabling an unauthenticated network-based attacker to forge or otherwise present improperly verified SAML assertions and gain access to resources protected by SAML-based single sign-on. Affected deployments include GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN, Authentication and Captive Portal, PAN-OS next-generation firewall web interfaces, Panorama web interfaces, and Prisma Access. Affected versions include PAN-OS 9.1 earlier than 9.1.3, 9.0 earlier than 9.0.9, 8.1 earlier than 8.1.15, and all PAN-OS 8.0 versions; PAN-OS 7.1 is not affected.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A VPN device vulnerability cited as one of several flaws actively exploited to deploy ransomware in double extortion attacks.
A specific Palo Alto PAN-OS vulnerability referenced alongside vendor guidance and external reporting; the content does not describe the flaw itself in detail.
A Palo Alto Networks OS/GlobalProtect VPN vulnerability referenced as exploited by the Russian-nexus adversary BERSERK BEAR to access targets via VPN infrastructure.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.