CVE-2026-77810
Athena Neptune connector allows read access to Lambda properties (exposes secrets).
Is CVE-2026-77810 being exploited?
Not confirmed. CVE-2026-77810 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-77810?
CVE-2026-77810 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-77810?
Yes. A fix has been recorded for CVE-2026-77810. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-77810 affect?
CVE-2026-77810 affects aws-athena-query-federation (Neptune connector) < v2026.30.1, AWS Athena Federated Query, AWS Lambda (connector compute). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-77810?
Upgrade aws-athena-query-federation to v2026.30.1+ and rotate/inspect Lambda secrets.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated Athena users querying Neptune can read Lambda function properties/environment, enabling secret exposure and data exfiltration.
Immediate action required
- affected>= 2024.15.1 and <= 2026.28.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.