CVE-2015-5194: The log_config_command function in ntp_parser.y in ntpd in NTP before 4.2.7p42 allows remote attackers to c...

Security readout for executives and security teams

This flaw can let a remote attacker crash the NTP daemon using crafted log configuration commands. The direct impact is denial of service: affected systems may stop synchronizing time until the service is restarted or updated. The sources do not show data theft, code execution, or confirmed active exploitation. Exposure is most likely on systems running vulnerable ntpd versions before 4.2.7p42, especially where remote NTP command/configuration handling is reachable. Vendor advisories indicate packaged exposure across several Linux and enterprise distributions, but the provided bundle does not enumerate exact affected package versions. Schedule remediation through normal vulnerability management, with faster handling for public NTP servers and systems where time accuracy affects authentication, logging, trading, monitoring, or distributed workloads. Business risk is service disruption, not confirmed compromise, based on the supplied sources. Mitigation focus: Update ntpd/NTP using the relevant vendor advisory or a version containing the upstream fix.; Prioritize externally reachable NTP servers and systems supporting authentication, logging, or distributed services.; Restrict remote access to ntpd control and configuration capabilities where operationally possible..

Prepared

Jun 12, 2026, 22:05 UTC (UTC+00:00)

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