EUVD-2026-18855CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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4Description
Improper certificate validation in the identity provider connection components in Amazon Athena ODBC driver before 2.1.0.0 might allow a man-in-the-middle threat actor to intercept authentication credentials due to insufficient default transport security when connecting to identity providers. This only applies to connections with external identity providers and does not apply to connections with Athena. To remediate this issue, users should upgrade to version 2.1.0.0.
Analysis
Man-in-the-middle attacks can intercept authentication credentials in Amazon Athena ODBC driver versions prior to 2.1.0.0 when connecting to external identity providers due to improper certificate validation (CWE-295). This network-accessible vulnerability (CVSS 7.4) affects deployments using federated authentication with external IdPs, allowing attackers positioned on the network path to capture credentials during the authentication handshake. …
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Remediation
Within 24 hours: Identify all systems running Amazon Athena ODBC driver and document current versions using vendor inventory tools or ODBC driver manager queries. Within 7 days: Deploy Athena ODBC driver version 2.1.0.0 or later across all Windows, Linux, and macOS endpoints; prioritize systems in untrusted network environments or those using federated authentication. …
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