AWS Security Bulletins: CVE-2026-77810 - Issue with Athena Federated Query Neptune Connector
AWS Security Bulletins has published a new security advisory. Here is a summary and what to do.
Key points
- New advisory from AWS Security Bulletins.
- Review affected versions in the advisory.
- Apply updates promptly.
AWS Security Bulletins published a security advisory titled “CVE-2026-77810 - Issue with Athena Federated Query Neptune Connector”.
At a glance
- Publisher
- AWS Security Bulletins
- CVEs
- CVE-2026-77810
What the advisory says
Bulletin ID: 2026-087-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/21/2026 12:30 PM PDT Description: Amazon Athena is a serverless, interactive query service that lets you analyze data directly in Amazon S3 using standard SQL. Athena Query Federation is a feature that allows you to connect to data sources outside of Amazon S3 like DynamoDB, Azure Synapse, and custom connectors using standard SQL syntax. These connectors are open source and deployed to the Athena service on a regular basis. We identified CVE-2026-77810, in the Neptune connector where a user with access to Neptune through Athena Federated Query could gain access to properties in the Lambda supplying the compute for the connector. Impacted versions: <=v2026.28.1 AND >=v2024.15.1 Please refer to the article below for the most up-to-date and complete information related to this AWS Security
What should you do?
- Read the full vendor advisory linked below and confirm whether you run affected versions.
- Schedule the recommended update, prioritising internet-facing systems.
- Watch for exploitation reports; unpatched edge devices are frequent targets.
What to do and how to stay safe: CVE-2026-77810
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
