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Vulnerability record · CVE-2025-46404 · published 5 November 2025

CVE-2025-46404: Entrouvert lasso null pointer dereference vulnerability

EEntrouvert · Lasso

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.

7.5 CVSS 3.1 High EPSS 0.59% · top 53.8% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://talosintelligence.com/vulnerability_reports/TALOS-2025-2194 ExploitThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2194 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-47151Entrouvert lasso type confusion vulnerabilityA type confusion vulnerability exists in the lasso_node_impl_init_from_xml functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. A specially crafte…EPSS 1.1%7.5CVE-2025-46784Entrouvert lasso memory leak vulnerabilityA denial of service vulnerability exists in the lasso_node_init_from_message_with_format functionality of Entr'ouvert Lasso 2.5.1. A specially cr…EPSS 0.59%7.5CVE-2025-46705Entrouvert lasso vulnerabilityA denial of service vulnerability exists in the g_assert_not_reached functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. A specially crafted SAML…EPSS 0.57%7.5CVE-2021-28091Entrouvert lasso improper verification of cryptographic signature vulnerabilityLasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.EPSS 1.3%7.5CVE-2015-1783Fedoraproject fedora memory buffer overflow vulnerabilityThe prefix variable in the get_or_define_ns function in Lasso before commit 6d854cef4211cdcdbc7446c978f23ab859847cdd allows remote attackers to cause…EPSS 3.5%4.3CVE-2009-0050Entrouvert lasso improper input validation vulnerabilityLasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass valida…EPSS 1.3%6.2CVE-2026-21525Windows Remote Access Connection Manager null pointer dereference DoSWindows Remote Access Connection Manager contains a null pointer dereference (CWE-476) that lets an unauthorized attacker deny service locally. The f…KEVEPSS 4.8%analysed

Source: NIST National Vulnerability Database (record CVE-2025-46404), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.