CVE-2026-85443

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

MOOS core-moos through 10.4.0 contains a denial of service vulnerability in MOOSCommServer::ListenLoop() where the accept thread performs a blocking receive without timeout during the wire-protocol handshake. An attacker can open a TCP connection to the MOOSDB port and send no data, causing the accept thread to block indefinitely while holding the socket-list lock, preventing all subsequent client connections.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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 (value × EchelonGraph’s weight)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 3, 2026

Last Modified

September 14, 2026

Advisory Details (5)

Auto-updated Sep 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
Web page

MOOS core-moos through 10.4.0 MOOSDB Accept Loop Denial of Service | Advisories | VulnCheck

https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-accept-loop-denial-of-service
Web page

core-moos/Core/libMOOS/Comms/MOOSCommServer.cpp at ec9c77c68fcbdef8f5e4c60fe243acd223433f0c · themoos/core-moos · GitHub

https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSCommServer.cpp#L922
Web page

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
GitHub commit

commit 8d940303949a (themoos/core-moos)

Fix landed in themoos/core-moos commit 8d940303949a — awaiting tagged release

https://github.com/themoos/core-moos/commit/8d940303949a850d4625eca2a60f27adee9c3ec4
GitHub pull request

Give the wire protocol read on the accept thread a timeout

Upstream fix in progress (PR #83 · themoos/core-moos, state=open)

https://github.com/themoos/core-moos/pull/83

Vendor Advisories for CVE-2026-85443(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 25× in last 7d / 118× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 149 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 49 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:17 UTCEG score recompute
  2. 2026-10-11 16:34 UTCEG score recompute
  3. 2026-10-11 13:51 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-10-10 11:12 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  7. 2026-10-09 23:24 UTCEG score recompute
  8. 2026-10-09 23:24 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-10-09 01:23 UTCEG score recompute
  11. 2026-10-09 01:22 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-10-07 23:23 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  15. 2026-10-07 07:02 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-10-06 19:09 UTCEG score recompute
  17. 2026-10-06 19:09 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-10-06 07:15 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  20. 2026-10-05 19:08 UTCEG score recompute
  21. 2026-10-05 19:08 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  22. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  23. 2026-10-05 07:20 UTCEG score recompute
  24. 2026-10-05 07:20 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
Show 75 more
  1. 2026-10-04 19:31 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  2. 2026-10-04 07:03 UTCEG score recompute
  3. 2026-10-04 07:03 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-10-03 19:14 UTCEG score recompute
  5. 2026-10-03 19:14 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  6. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-10-03 07:05 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-10-02 19:16 UTCEG score recompute
  9. 2026-10-02 19:16 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  10. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  11. 2026-10-02 07:25 UTCEG score recompute
  12. 2026-10-02 07:25 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  13. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-10-01 19:37 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  15. 2026-10-01 06:53 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-09-30 19:04 UTCEG score recompute
  17. 2026-09-30 19:04 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  18. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-09-30 02:50 UTCEG score recompute
  20. 2026-09-30 02:50 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-09-29 14:56 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  22. 2026-09-29 02:58 UTCEG score recompute
  23. 2026-09-29 02:58 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  24. 2026-09-28 15:09 UTCEG score recompute
  25. 2026-09-28 15:08 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  26. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  27. 2026-09-28 03:10 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  28. 2026-09-27 15:22 UTCEG score recompute
  29. 2026-09-27 15:22 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  30. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  31. 2026-09-27 03:18 UTCEG score recompute
  32. 2026-09-27 03:18 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  33. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  34. 2026-09-26 15:28 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  35. 2026-09-26 03:39 UTCEG score recompute
  36. 2026-09-26 03:39 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  37. 2026-09-25 11:14 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  38. 2026-09-24 23:17 UTCEG score recompute
  39. 2026-09-24 23:17 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  40. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  41. 2026-09-24 11:13 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  42. 2026-09-23 23:25 UTCEG score recompute
  43. 2026-09-23 23:25 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  44. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  45. 2026-09-23 11:29 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  46. 2026-09-22 23:40 UTCEG score recompute
  47. 2026-09-22 23:40 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  48. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  49. 2026-09-22 11:51 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  50. 2026-09-22 00:02 UTCEG score recompute
  51. 2026-09-22 00:02 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  52. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  53. 2026-09-21 12:13 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  54. 2026-09-21 00:25 UTCEG score recompute
  55. 2026-09-21 00:24 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  56. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  57. 2026-09-20 12:31 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  58. 2026-09-20 00:39 UTCEG score recompute
  59. 2026-09-20 00:39 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  60. 2026-09-19 12:50 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-09-19 01:02 UTCEG score recompute
  62. 2026-09-19 01:02 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  63. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  64. 2026-09-18 13:13 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  65. 2026-09-18 01:24 UTCEG score recompute
  66. 2026-09-18 01:24 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  67. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  68. 2026-09-17 13:36 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  69. 2026-09-17 01:47 UTCEG score recompute
  70. 2026-09-17 01:47 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  71. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  72. 2026-09-16 13:58 UTCEG score recompute
  73. 2026-09-16 13:58 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5
  74. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  75. 2026-09-16 01:59 UTCGHSA enrichmentGHSA-qqc5-c4q6-4q3x · GitHub severity HIGH · GitHub CVSS 7.5

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85443?
CVE-2026-85443 is a high-severity vulnerability; its CVE record was published on September 3, 2026. MOOS core-moos through 10.4.0 contains a denial of service vulnerability in MOOSCommServer::ListenLoop() where the accept thread performs a blocking receive without timeout during the wire-protocol handshake. An attacker can open a TCP connection to the MOOSDB port and send no data, causing the…
When was CVE-2026-85443 made public?
CVE-2026-85443 was made public on September 1, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on September 3, 2026. EchelonGraph's copy of the record carries a last-modified date of September 14, 2026; the record at its source may have been updated since.
Is CVE-2026-85443 actively exploited?
CVE-2026-85443 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-2026-85443?
CVE-2026-85443 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-85443?
An upstream fix for CVE-2026-85443 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-85443 are linked in the Vendor Advisories panel on this page.

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