CVE-2026-85427

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-04. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

MOOS essential-moos pAntler through 10.0.1 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary programs by publishing a crafted MISSION_FILE message to the MOOSDB. Attackers can publish a mission file containing malicious Run entries that pAntler parses and executes via execvp() without authentication validation.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 8, 2026

Advisory Details (5)

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

MOOS essential-moos through 10.0.1 pAntler Remote Code Execution via Unauthenticated MISSION_FILE | Advisories | VulnCheck

https://www.vulncheck.com/advisories/moos-essential-moos-through-10.0.1-pantler-remote-code-execution-via-unauthenticated-mission-file
generic

essential-moos/Essentials/pAntler/Antler.cpp at b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6 · themoos/essential-moos · GitHub

https://github.com/themoos/essential-moos/blob/b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6/Essentials/pAntler/Antler.cpp#L95
generic

GitHub - themoos/essential-moos: a set of useful applications that leverage the core-moos communications layer · GitHub

https://github.com/themoos/essential-moos
github_commit

commit e219f2671092 (themoos/essential-moos)

Fix landed in themoos/essential-moos commit e219f2671092 — awaiting tagged release

https://github.com/themoos/essential-moos/commit/e219f26710927f9c155a6b0dc11e3bd5f3da6730
github_pr

pAntler: only accept a remote mission file from a named process

Upstream fix in progress (PR #17 · themoos/essential-moos, state=open)

https://github.com/themoos/essential-moos/pull/17

Vendor Advisories for CVE-2026-85427(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 27× in last 7d / 63× 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. 2026-09-19 09:08 UTCGHSA enrichment
  2. 2026-09-18 21:23 UTCEG score recompute
  3. 2026-09-18 21:23 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 08:33 UTCGHSA enrichment
  6. 2026-09-17 20:48 UTCEG score recompute
  7. 2026-09-17 20:48 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 09:04 UTCGHSA enrichment
  10. 2026-09-16 21:20 UTCEG score recompute
  11. 2026-09-16 21:20 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 09:02 UTCEG score recompute
  14. 2026-09-16 09:02 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 21:14 UTCGHSA enrichment
  17. 2026-09-15 09:30 UTCEG score recompute
  18. 2026-09-15 09:30 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 21:46 UTCGHSA enrichment
  22. 2026-09-14 10:02 UTCGHSA enrichment
  23. 2026-09-13 22:18 UTCEG score recompute
  24. 2026-09-13 22:18 UTCGHSA enrichment
  25. 2026-09-13 10:34 UTCGHSA enrichment
Show 38 more
  1. 2026-09-12 22:50 UTCEG score recompute
  2. 2026-09-12 22:50 UTCGHSA enrichment
  3. 2026-09-12 11:06 UTCGHSA enrichment
  4. 2026-09-11 23:15 UTCEG score recompute
  5. 2026-09-11 23:15 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 10:53 UTCEG score recompute
  9. 2026-09-11 10:53 UTCGHSA enrichment
  10. 2026-09-10 23:09 UTCGHSA enrichment
  11. 2026-09-10 11:25 UTCEG score recompute
  12. 2026-09-10 11:25 UTCGHSA enrichment
  13. 2026-09-09 23:26 UTCGHSA enrichment
  14. 2026-09-09 08:03 UTCEG score recompute
  15. 2026-09-09 08:03 UTCGHSA enrichment
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-08 20:20 UTCGHSA enrichment
  18. 2026-09-08 05:30 UTCGHSA enrichment
  19. 2026-09-07 17:43 UTCEG score recompute
  20. 2026-09-07 17:43 UTCGHSA enrichment
  21. 2026-09-07 05:59 UTCGHSA enrichment
  22. 2026-09-06 18:16 UTCEG score recompute
  23. 2026-09-06 18:16 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 06:32 UTCGHSA enrichment
  26. 2026-09-05 18:48 UTCEG score recompute
  27. 2026-09-05 18:48 UTCGHSA enrichment
  28. 2026-09-05 15:31 UTCEPSS rescore
  29. 2026-09-05 07:05 UTCGHSA enrichment
  30. 2026-09-04 19:21 UTCEG score recompute
  31. 2026-09-04 19:21 UTCGHSA enrichment
  32. 2026-09-04 18:41 UTCEG score recompute
  33. 2026-09-04 18:41 UTCGHSA enrichment
  34. 2026-09-04 11:14 UTCEG score recompute
  35. 2026-09-04 11:14 UTCGHSA enrichment
  36. 2026-09-03 23:30 UTCEG score recompute
  37. 2026-09-03 22:44 UTCEG score recompute
  38. 2026-09-03 22:43 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85427?
CVE-2026-85427 is a high vulnerability published on September 3, 2026. MOOS essential-moos pAntler through 10.0.1 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary programs by publishing a crafted MISSION_FILE message to the MOOSDB. Attackers can publish a mission file containing malicious Run entries that…
When was CVE-2026-85427 disclosed?
CVE-2026-85427 was first published in the National Vulnerability Database on September 3, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85427 actively exploited?
CVE-2026-85427 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.0% of all scored CVEs.
What is the CVSS score of CVE-2026-85427?
CVE-2026-85427 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-85427?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85427, 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.

Dependency Blast Radius

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