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CVE-2025-59719 is a critical authentication bypass vulnerability in Fortinet FortiWeb caused by improper verification of cryptographic signatures during FortiCloud SSO SAML response processing. Affected versions are FortiWeb 8.0.0, 7.6.0 through 7.6.4, and 7.4.0 through 7.4.9. Because the device does not correctly validate the cryptographic signature on a SAML response, an unauthenticated attacker can submit a crafted SAML response message and be accepted as authenticated through the FortiCloud SSO administrative login flow. The flaw affects the FortiCloud SSO login feature rather than local authentication and enables unauthorized access to the administrative interface when that feature is enabled.
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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.
175 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
FortiGate vulnerability possibly used in the FortiBleed campaign; described in context as one of the older unpatched flaws enabling authentication bypass and takeover of devices.
A FortiNet SSO vulnerability referenced as leading to full system compromise.
A FortiNet SSO vulnerability that, together with CVE-2025-59718, can lead to full system compromise.
Fortinet states this issue may have been used to collect credentials involved in the FortiBleed campaign, but the article provides no technical details about the flaw itself.
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.