CVE-2016-2403

9.8 CRITICAL

Published: February 07, 2017 Modified: May 13, 2026

Description

Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password

Source: cve@mitre.org

Vendor Advisory

http://www.securityfocus.com/bid/96137

Source: cve@mitre.org

Third Party Advisory VDB Entry

https://www.debian.org/security/2018/dsa-4262

Source: cve@mitre.org

http://symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

http://www.securityfocus.com/bid/96137

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

https://www.debian.org/security/2018/dsa-4262

Source: af854a3a-2127-422b-91ae-364da2661108

6 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

2.9%

85th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-287

Affected Vendors

sensiolabs

Related CVEs