CVE-2018-10548: An issue was discovered in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7....

Security readout for executives and security teams

CVE-2018-10548 is a PHP LDAP availability bug. If a PHP application using ext/ldap talks to a problematic remote LDAP server, PHP can mishandle a returned distinguished name value and crash the application process. The cited sources describe denial of service, not data theft or code execution. Most exposed systems are PHP applications or services using the LDAP extension for directory lookup, authentication, or synchronization while running affected PHP branches. General PHP deployments without ext/ldap use are not clearly exposed from the provided evidence. Treat this as a targeted availability risk, not an emergency remote code execution issue based on the provided sources. Patch during the next maintenance window, sooner for authentication services or customer-facing systems that rely on LDAP. Mitigation focus: Upgrade PHP to 5.6.36, 7.0.30, 7.1.17, 7.2.5, or later vendor builds.; Apply relevant Ubuntu, Debian, Red Hat, Gentoo, or NetApp security updates where applicable.; Prioritize externally reachable or business-critical PHP services using LDAP integration..

Prepared

Jun 7, 2026, 13:40 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.