CVE-2026-35558 Amazon CVE debrief

Who should care

Defenders responsible for Amazon Athena ODBC driver deployments, security teams, and vulnerability management teams should assess exposure and prioritize upgrading to version 2.1.0.0. Affected operators and platforms should be identified, and inventory checks should be performed to ensure remediation. Security teams should review and update authentication flows and connection parameters, and monitor for potential suspicious activity.

Why it matters

CVE-2026-35558 is a high-severity vulnerability in the Amazon Athena ODBC driver that could allow code execution or authentication flow redirection. Defenders should prioritize upgrading to version 2.1.0.0 and verify affected versions and inventory checks.

• Potential code execution requires verification from official sources
• Authentication flow redirection requires verification from official sources
• Upgrade to version 2.1.0.0 to remediate the issue
• Verify affected versions and inventory checks

Technical summary

The Amazon Athena ODBC driver before version 2.1.0.0 improperly neutralizes special elements in authentication components. This could allow threat actors to execute arbitrary code or redirect authentication flows using specially crafted connection parameters. The vulnerability has a high severity and requires immediate attention from defenders. Users should upgrade to version 2.1.0.0 to remediate this issue. The affected product context and defensive impact should be carefully evaluated to prevent potential code execution or authentication flow redirection.

Defensive priority

Defenders should prioritize upgrading to version 2.1.0.0 of the Amazon Athena ODBC driver to prevent potential code execution or authentication flow redirection.

Recommended defensive actions

• Upgrade to version 2.1.0.0 of the Amazon Athena ODBC driver
• Review and update authentication flows and connection parameters
• Monitor for potential suspicious activity
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. Vendor advisories and release notes are also available. The vulnerability affects the Amazon Athena ODBC driver before version 2.1.0.0, and defenders should verify affected versions and inventory checks. The CVE Program and NVD provide official records and assessments, while vendor advisories and release notes offer additional guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.