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CVE-2025-14017 is a medium-severity vulnerability in libcurl affecting multi-threaded LDAPS transfers when libcurl is built with the legacy non-Windows LDAP backend. During concurrent LDAP over TLS operations, changes to TLS-related options intended for a single transfer can be applied through shared global state rather than remaining scoped to the calling thread or transfer. As a result, one thread's TLS configuration can inadvertently affect other concurrently initialized LDAPS transfers. A documented consequence is that disabling certificate verification for one transfer may unintentionally disable verification for other threads as well. The issue is highly timing-sensitive and is limited to libcurl versions 7.17.0 through 8.17.0 using the legacy backend; builds using OpenLDAP or WinLDAP are not affected, and the curl command-line tool is not impacted.
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Cross-references every affected SKU, including bundled OEM variants.
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