CVE-2025-46404 - CVE House
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Status published High CVE-2025-46404

A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality...

Vulnerability Description

A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr'ouvert Lasso 2.5.1. A specially crafted SAML response can lead to a denial of service. An attacker can send a malformed SAML response to trigger this vulnerability.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Discovered by Keane O'Kelley of and another member of Cisco Advanced Security Initiative Group

References

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Affected Vendor

Entr'ouvert

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Affected Software

Lasso
Vulnerable Versions:
2.5.1

Timeline

Official Publish: November 5th, 2025
Last Modified: November 5th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-476

MITRE ATT&CK TTPs

T1499 Endpoint Denial of Service
Impact
T1499.004 Application or System Exploitation
Impact
T1489 Service Stop
Impact
T1203 Exploitation for Client Execution
Execution
T1190 Exploit Public-Facing Application
Initial Access