CVE-2003-0564: Multiple vulnerabilities in multiple vendor implementations of the Secure/Multipurpose Internet Mail Extens...

Security readout for executives and security teams

This is an old S/MIME email parsing issue. A maliciously crafted signed or encrypted email could crash vulnerable software and may allow code execution. The bundle does not identify exact affected products or versions, so urgency depends on whether legacy systems still process S/MIME email with software covered by the vendor advisories. Likely exposure is legacy mail clients, mail gateways, or cryptographic libraries that parse S/MIME and match vendor advisories listed for Red Hat, Fedora, HP, Mandrake/Mandriva, SGI, CERT, SecurityFocus, OVAL, or IBM X-Force. Prioritize if the organization still operates legacy S/MIME-capable mail software. For modern patched environments, the main task is verification. For unsupported legacy mail gateways or clients, remediation should be scheduled promptly because the reported impact includes possible code execution. Mitigation focus: Review vendor advisories for affected S/MIME implementations and package names.; Apply vendor-provided security updates for matching legacy systems.; Disable or restrict S/MIME processing where updates are unavailable..

Prepared

Jun 30, 2026, 07:58 UTC (UTC+00:00)

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