CVE-2015-7849: Use-after-free vulnerability in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote aut...

Security readout for executives and security teams

This is a memory-safety flaw in ntpd. An authenticated remote user could send crafted packets that may crash the time service or possibly run code. Business urgency depends on whether affected NTP daemons are reachable by authenticated peers or clients. Exposure is most likely on servers or appliances running affected ntpd versions and accepting authenticated remote NTP traffic. The provided affected-product metadata is incomplete, so validation should focus on actual ntpd version and vendor package status. Treat this as a targeted infrastructure risk, not a broad unauthenticated internet worm scenario based on the provided evidence. Patch or isolate affected authenticated NTP deployments, especially those supporting critical systems, network devices, or shared trust relationships. Mitigation focus: Upgrade affected ntpd deployments to vendor-fixed packages or non-affected NTP releases.; Prioritize systems running NTP 4.2.x before 4.2.8p4 or 4.3.x before 4.3.77.; Restrict authenticated NTP relationships to trusted hosts only..

Prepared

Jun 12, 2026, 21:41 UTC (UTC+00:00)

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