CVE-2026-77810

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (48th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Neptune connector, a user with access to Neptune through Athena Federated Query could gain access to properties in the Lambda supplying the compute for the connector. To remediate this issue, users should upgrade to aws-athena-query-federation v2026.30.1 or later.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
45
EG Risk 45/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity99% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 21, 2026

Last Modified

August 27, 2026

Advisory Details (3)

Auto-updated Oct 1, 2026
Patch available. Sources: github_release, github.
githubMentions a patch (unverified)

Issue with Athena Federated Query Neptune Connector · Advisory · awslabs/aws-athena-query-federation · GitHub

https://github.com/awslabs/aws-athena-query-federation/security/advisories/GHSA-v7c2-5wfg-qg44
github_release Patch Available

Release v2026.30.1 of Athena Query Federation

Patch available: awslabs/aws-athena-query-federation v2026.30.1

https://github.com/awslabs/aws-athena-query-federation/releases/tag/v2026.30.1
generic

CVE-2026-77810 - Issue with Athena Federated Query Neptune Connector

https://aws.amazon.com/security/security-bulletins/2026-087-aws/

Vendor Advisories for CVE-2026-77810(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 53× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-07 23:48 UTCEPSS rescore
  2. 2026-10-06 16:49 UTCEG score recompute
  3. 2026-10-06 15:18 UTCEPSS rescore
  4. 2026-10-05 18:56 UTCEG score recompute
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-05 01:31 UTCEG score recompute
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 16:42 UTCEG score recompute
  9. 2026-10-03 14:26 UTCEPSS rescore
  10. 2026-10-02 20:59 UTCEG score recompute
  11. 2026-10-01 21:24 UTCEG score recompute
  12. 2026-10-01 19:50 UTCEPSS rescore
  13. 2026-09-30 20:28 UTCEG score recompute
  14. 2026-09-29 16:11 UTCEG score recompute
  15. 2026-09-29 15:24 UTCEPSS rescore
  16. 2026-09-28 21:35 UTCEG score recompute
  17. 2026-09-28 14:07 UTCEG score recompute
  18. 2026-09-28 13:52 UTCEPSS rescore
  19. 2026-09-27 16:22 UTCEG score recompute
  20. 2026-09-27 13:48 UTCEPSS rescore
  21. 2026-09-27 02:27 UTCEG score recompute
  22. 2026-09-26 15:59 UTCEPSS rescore
  23. 2026-09-26 00:28 UTCEPSS rescore
  24. 2026-09-24 15:55 UTCEG score recompute
  25. 2026-09-24 14:04 UTCEPSS rescore
Show 64 more
  1. 2026-09-23 18:14 UTCEG score recompute
  2. 2026-09-23 17:54 UTCEPSS rescore
  3. 2026-09-22 19:57 UTCEG score recompute
  4. 2026-09-22 16:01 UTCEPSS rescore
  5. 2026-09-21 22:10 UTCEG score recompute
  6. 2026-09-21 21:09 UTCEPSS rescore
  7. 2026-09-20 23:28 UTCEG score recompute
  8. 2026-09-20 20:16 UTCEPSS rescore
  9. 2026-09-19 16:40 UTCEG score recompute
  10. 2026-09-18 23:17 UTCEG score recompute
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-17 21:16 UTCEG score recompute
  13. 2026-09-16 14:56 UTCEG score recompute
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 06:10 UTCEG score recompute
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 04:07 UTCEG score recompute
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-13 20:33 UTCEG score recompute
  21. 2026-09-12 18:32 UTCEG score recompute
  22. 2026-09-11 16:27 UTCEG score recompute
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 12:06 UTCEG score recompute
  25. 2026-09-10 13:55 UTCEG score recompute
  26. 2026-09-10 09:35 UTCEPSS rescore
  27. 2026-09-09 01:45 UTCEG score recompute
  28. 2026-09-08 22:01 UTCEPSS rescore
  29. 2026-09-07 20:04 UTCEG score recompute
  30. 2026-09-06 17:39 UTCEG score recompute
  31. 2026-09-06 13:48 UTCEPSS rescore
  32. 2026-09-05 15:36 UTCEG score recompute
  33. 2026-09-04 17:31 UTCEG score recompute
  34. 2026-09-04 08:46 UTCEG score recompute
  35. 2026-09-04 05:07 UTCEPSS rescore
  36. 2026-09-02 15:11 UTCEG score recompute
  37. 2026-09-02 14:12 UTCEPSS rescore
  38. 2026-09-01 17:13 UTCEG score recompute
  39. 2026-09-01 13:54 UTCEPSS rescore
  40. 2026-09-01 08:24 UTCEG score recompute
  41. 2026-09-01 04:40 UTCEPSS rescore
  42. 2026-09-01 04:40 UTCEPSS rescore
  43. 2026-08-30 20:49 UTCEG score recompute
  44. 2026-08-30 19:18 UTCEPSS rescore
  45. 2026-08-30 19:17 UTCEPSS rescore
  46. 2026-08-30 03:25 UTCEG score recompute
  47. 2026-08-30 01:22 UTCEPSS rescore
  48. 2026-08-29 01:07 UTCEG score recompute
  49. 2026-08-28 21:42 UTCEPSS rescore
  50. 2026-08-27 20:28 UTCEG score recompute
  51. 2026-08-27 15:40 UTCEG score recompute
  52. 2026-08-27 14:25 UTCEPSS rescore
  53. 2026-08-26 17:52 UTCEG score recompute
  54. 2026-08-26 14:47 UTCEPSS rescore
  55. 2026-08-25 14:51 UTCEG score recompute
  56. 2026-08-25 13:49 UTCEPSS rescore
  57. 2026-08-24 16:48 UTCEG score recompute
  58. 2026-08-24 14:18 UTCEPSS rescore
  59. 2026-08-24 13:25 UTCEG score recompute
  60. 2026-08-23 02:43 UTCEG score recompute
  61. 2026-08-23 00:19 UTCEPSS rescore
  62. 2026-08-21 20:23 UTCEG score recompute
  63. 2026-08-21 19:44 UTCEG score recompute
  64. 2026-08-21 19:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77810?
CVE-2026-77810 is a critical vulnerability published on August 21, 2026. In the Neptune connector, a user with access to Neptune through Athena Federated Query could gain access to properties in the Lambda supplying the compute for the connector. To remediate this issue, users should upgrade to aws-athena-query-federation v2026.30.1 or later.
When was CVE-2026-77810 disclosed?
CVE-2026-77810 was first published on August 21, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77810 actively exploited?
CVE-2026-77810 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77810?
CVE-2026-77810 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-77810?
A fix for CVE-2026-77810 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-77810 are linked in the Vendor Advisories panel on this page.

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