CVE-2026-85428

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-04. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

MOOS core-moos through 10.4.0 contains an authentication bypass vulnerability in the optional MOOSDB HTTP server that allows unauthenticated clients to write variables. Attackers can send HTTP requests with variable names and values to the MOOSDB HTTP server port to modify MOOS variables including actuator and override commands without authentication.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 14, 2026

Advisory Details (5)

Auto-updated Sep 14, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

MOOS core-moos through 10.4.0 MOOSDB HTTP Server Unauthenticated Variable Write | Advisories | VulnCheck

https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-http-server-unauthenticated-variable-write
github_pr

Make writing to the DB over HTTP opt in

Upstream fix in progress (PR #77 · themoos/core-moos, state=open)

https://github.com/themoos/core-moos/pull/77
github_commit

commit 7e3aecdbf5fe (themoos/core-moos)

Fix landed in themoos/core-moos commit 7e3aecdbf5fe — awaiting tagged release

https://github.com/themoos/core-moos/commit/7e3aecdbf5fe47980ea9399340c77940991a6fa5
generic

core-moos/Core/libMOOS/DB/HTTPConnection.cpp at ec9c77c68fcbdef8f5e4c60fe243acd223433f0c · themoos/core-moos · GitHub

https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/DB/HTTPConnection.cpp#L196
generic

GitHub - themoos/core-moos: A very light weight, easy to use middleware. You will need core-moos above all other components · GitHub

https://github.com/themoos/core-moos

Vendor Advisories for CVE-2026-85428(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 58× in last 7d / 137× 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.

Showing the most recent 100 of 137 total refreshes for this CVE.

  1. 2026-09-21 06:02 UTCGHSA enrichment
  2. 2026-09-21 02:03 UTCGHSA enrichment
  3. 2026-09-20 22:05 UTCEG score recompute
  4. 2026-09-20 22:05 UTCGHSA enrichment
  5. 2026-09-20 20:16 UTCEPSS rescore
  6. 2026-09-20 18:06 UTCGHSA enrichment
  7. 2026-09-20 14:02 UTCGHSA enrichment
  8. 2026-09-20 10:04 UTCGHSA enrichment
  9. 2026-09-20 06:02 UTCGHSA enrichment
  10. 2026-09-20 02:03 UTCGHSA enrichment
  11. 2026-09-19 22:05 UTCGHSA enrichment
  12. 2026-09-19 18:03 UTCEG score recompute
  13. 2026-09-19 18:03 UTCGHSA enrichment
  14. 2026-09-19 14:04 UTCGHSA enrichment
  15. 2026-09-19 09:56 UTCGHSA enrichment
  16. 2026-09-19 05:22 UTCGHSA enrichment
  17. 2026-09-19 01:22 UTCGHSA enrichment
  18. 2026-09-18 21:23 UTCEG score recompute
  19. 2026-09-18 21:23 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 16:30 UTCGHSA enrichment
  22. 2026-09-18 12:27 UTCGHSA enrichment
  23. 2026-09-18 08:29 UTCGHSA enrichment
  24. 2026-09-18 04:31 UTCGHSA enrichment
  25. 2026-09-18 00:32 UTCGHSA enrichment
Show 75 more
  1. 2026-09-17 20:33 UTCEG score recompute
  2. 2026-09-17 20:33 UTCGHSA enrichment
  3. 2026-09-17 19:32 UTCEPSS rescore
  4. 2026-09-17 15:36 UTCGHSA enrichment
  5. 2026-09-17 11:36 UTCGHSA enrichment
  6. 2026-09-17 07:34 UTCGHSA enrichment
  7. 2026-09-17 03:36 UTCGHSA enrichment
  8. 2026-09-16 23:37 UTCGHSA enrichment
  9. 2026-09-16 19:38 UTCGHSA enrichment
  10. 2026-09-16 15:37 UTCEG score recompute
  11. 2026-09-16 15:37 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 11:20 UTCGHSA enrichment
  14. 2026-09-16 07:22 UTCEG score recompute
  15. 2026-09-16 07:22 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-16 03:23 UTCGHSA enrichment
  18. 2026-09-15 23:24 UTCGHSA enrichment
  19. 2026-09-15 19:04 UTCGHSA enrichment
  20. 2026-09-15 15:05 UTCGHSA enrichment
  21. 2026-09-15 11:00 UTCGHSA enrichment
  22. 2026-09-15 06:36 UTCEG score recompute
  23. 2026-09-15 06:36 UTCGHSA enrichment
  24. 2026-09-15 03:12 UTCEPSS rescore
  25. 2026-09-15 03:12 UTCEPSS rescore
  26. 2026-09-15 02:37 UTCGHSA enrichment
  27. 2026-09-14 22:38 UTCGHSA enrichment
  28. 2026-09-14 18:39 UTCGHSA enrichment
  29. 2026-09-14 14:32 UTCEG score recompute
  30. 2026-09-14 14:32 UTCGHSA enrichment
  31. 2026-09-14 14:00 UTCEG score recompute
  32. 2026-09-14 14:00 UTCGHSA enrichment
  33. 2026-09-14 11:51 UTCGHSA enrichment
  34. 2026-09-14 07:52 UTCGHSA enrichment
  35. 2026-09-14 03:54 UTCGHSA enrichment
  36. 2026-09-13 23:55 UTCGHSA enrichment
  37. 2026-09-13 19:57 UTCEG score recompute
  38. 2026-09-13 19:57 UTCGHSA enrichment
  39. 2026-09-13 15:58 UTCGHSA enrichment
  40. 2026-09-13 12:00 UTCGHSA enrichment
  41. 2026-09-13 08:01 UTCGHSA enrichment
  42. 2026-09-13 04:03 UTCGHSA enrichment
  43. 2026-09-13 00:04 UTCGHSA enrichment
  44. 2026-09-12 20:06 UTCGHSA enrichment
  45. 2026-09-12 16:07 UTCEG score recompute
  46. 2026-09-12 16:07 UTCGHSA enrichment
  47. 2026-09-12 12:08 UTCGHSA enrichment
  48. 2026-09-12 08:09 UTCGHSA enrichment
  49. 2026-09-12 04:10 UTCGHSA enrichment
  50. 2026-09-12 00:11 UTCGHSA enrichment
  51. 2026-09-11 20:10 UTCGHSA enrichment
  52. 2026-09-11 15:47 UTCEG score recompute
  53. 2026-09-11 15:47 UTCGHSA enrichment
  54. 2026-09-11 14:53 UTCEPSS rescore
  55. 2026-09-11 14:53 UTCEPSS rescore
  56. 2026-09-11 11:48 UTCEG score recompute
  57. 2026-09-11 11:48 UTCGHSA enrichment
  58. 2026-09-11 07:49 UTCGHSA enrichment
  59. 2026-09-11 03:50 UTCGHSA enrichment
  60. 2026-09-10 23:51 UTCGHSA enrichment
  61. 2026-09-10 19:29 UTCGHSA enrichment
  62. 2026-09-10 15:30 UTCGHSA enrichment
  63. 2026-09-10 11:25 UTCEG score recompute
  64. 2026-09-10 11:25 UTCGHSA enrichment
  65. 2026-09-10 07:24 UTCGHSA enrichment
  66. 2026-09-10 03:25 UTCGHSA enrichment
  67. 2026-09-09 23:26 UTCGHSA enrichment
  68. 2026-09-09 16:22 UTCGHSA enrichment
  69. 2026-09-09 12:19 UTCGHSA enrichment
  70. 2026-09-09 08:20 UTCGHSA enrichment
  71. 2026-09-09 04:21 UTCGHSA enrichment
  72. 2026-09-09 00:23 UTCEG score recompute
  73. 2026-09-09 00:23 UTCGHSA enrichment
  74. 2026-09-08 22:01 UTCEPSS rescore
  75. 2026-09-08 20:20 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85428?
CVE-2026-85428 is a critical vulnerability published on September 3, 2026. MOOS core-moos through 10.4.0 contains an authentication bypass vulnerability in the optional MOOSDB HTTP server that allows unauthenticated clients to write variables. Attackers can send HTTP requests with variable names and values to the MOOSDB HTTP server port to modify MOOS variables including…
When was CVE-2026-85428 disclosed?
CVE-2026-85428 was first published in the National Vulnerability Database on September 3, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85428 actively exploited?
CVE-2026-85428 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 55.2% of all scored CVEs.
What is the CVSS score of CVE-2026-85428?
CVE-2026-85428 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-85428?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85428, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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