CVE-2014-3597: Multiple buffer overflows in the php_parserr function in ext/standard/dns.c in PHP before 5.4.32 and 5.5.x...

Security readout for executives and security teams

Older PHP versions can crash, and may allow code execution, when a PHP application processes a malicious DNS record returned by a DNS server. The risk is concentrated in legacy PHP 5.4/5.5 environments where application code calls dns_get_record on untrusted or attacker-influenced domains. Exposure is likely only where unsupported legacy PHP versions remain and code uses dns_get_record. Internet-facing applications, DNS lookup utilities, monitoring systems, and backend enrichment services are higher concern if they resolve attacker-controlled names. Treat as urgent for any remaining legacy PHP estate, especially public-facing services. For modern supported PHP versions, priority is mainly confirmation and cleanup. No active exploitation is cited, but possible code execution makes unpatched exposure unacceptable. Mitigation focus: Upgrade PHP to 5.4.32, 5.5.16, or a supported later release.; Apply vendor distribution security updates from Ubuntu, Debian, Red Hat, SUSE, Apple, or Oracle as applicable.; Inventory legacy PHP runtimes and prioritize systems using dns_get_record..

Prepared

Jun 14, 2026, 07:14 UTC (UTC+00:00)

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