How severe is CVE-2015-1401?

CVE-2015-1401 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-1401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1401?

CVE-2015-1401 affects Ldap / Sso Authentication Project Ldap / Sso Authentication. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-1401?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-1401 published?

CVE-2015-1401 was published on 2017-08-28 and last updated on 2026-06-17.

CVE-2015-1401

CVE-2015-1401 is a critical-severity vulnerability in Ldap / Sso Authentication Project Ldap / Sso Authentication with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Ldap / Sso Authentication Project Ldap / Sso Authentication
Published: 2017-08-28
Last modified: 2026-06-17

Description

Improper Authentication vulnerability in the "LDAP / SSO Authentication" (ig_ldap_sso_auth) extension 2.0.0 for TYPO3.

Frequently asked questions

What is CVE-2015-1401?: Improper Authentication vulnerability in the "LDAP / SSO Authentication" (ig_ldap_sso_auth) extension 2.0.0 for TYPO3.
How severe is CVE-2015-1401?: CVE-2015-1401 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-1401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1401?: CVE-2015-1401 affects Ldap / Sso Authentication Project Ldap / Sso Authentication. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-1401?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-1401 published?: CVE-2015-1401 was published on 2017-08-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ldap_\/_sso_authentication_project:ldap_\/_sso_authentication:2.0.0:*:*:*:*:typo3:*:*

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →