CVE-2026-10831

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 79% of all CVEs by exploit prediction. 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
Trending — 3 sources updated this week
6.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.9Exploit: NoneExposed: 0

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

A denial-of-service vulnerability exists in NPort devices because of improper access control on the command port. The command interface does not properly validate whether a sender is associated with a valid data port session before accepting break signal commands. A remote attacker with network access can send crafted requests to disrupt serial communication for an active user session.

CVSS v3
6.9
EG Score
6.9(medium)
EPSS
21.0%
KEV
Not listed

Published

June 16, 2026

Last Modified

June 16, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

CVE-2026-10831: Improper Authorization Vulnerability in Serial Device Servers | Moxa

https://www.moxa.com/en/support/product-support/security-advisory/mpsa-262370-cve-2026-10831-improper-authorization-vulnerability-in-serial-device-servers

Vendor Advisories for CVE-2026-10831(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 22× in last 7d / 68× 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. 2026-07-06 23:13 UTCEG score recompute
  2. 2026-07-06 23:13 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 11:33 UTCEG score recompute
  6. 2026-07-05 11:32 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 10:26 UTCEG score recompute
  10. 2026-07-04 10:26 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 09:23 UTCEG score recompute
  13. 2026-07-03 09:23 UTCGHSA enrichment
  14. 2026-07-02 08:20 UTCEG score recompute
  15. 2026-07-02 08:19 UTCGHSA enrichment
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-07-01 15:06 UTCEPSS rescore
  18. 2026-07-01 07:16 UTCEG score recompute
  19. 2026-07-01 07:16 UTCGHSA enrichment
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 06:13 UTCEG score recompute
  22. 2026-06-30 06:13 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 05:10 UTCEG score recompute
  25. 2026-06-29 05:10 UTCGHSA enrichment
Show 43 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-28 04:00 UTCEG score recompute
  5. 2026-06-28 04:00 UTCGHSA enrichment
  6. 2026-06-27 03:08 UTCEPSS rescore
  7. 2026-06-27 02:57 UTCEG score recompute
  8. 2026-06-27 02:57 UTCGHSA enrichment
  9. 2026-06-26 01:54 UTCEG score recompute
  10. 2026-06-26 01:54 UTCGHSA enrichment
  11. 2026-06-25 13:49 UTCEPSS rescore
  12. 2026-06-25 00:51 UTCEG score recompute
  13. 2026-06-25 00:51 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-23 23:48 UTCEG score recompute
  16. 2026-06-23 23:47 UTCGHSA enrichment
  17. 2026-06-23 21:32 UTCEPSS rescore
  18. 2026-06-22 22:44 UTCEG score recompute
  19. 2026-06-22 22:44 UTCGHSA enrichment
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-21 21:41 UTCEG score recompute
  23. 2026-06-21 21:40 UTCGHSA enrichment
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
  26. 2026-06-21 01:59 UTCEPSS rescore
  27. 2026-06-21 01:59 UTCEPSS rescore
  28. 2026-06-20 20:21 UTCEG score recompute
  29. 2026-06-20 20:21 UTCGHSA enrichment
  30. 2026-06-19 19:25 UTCEPSS rescore
  31. 2026-06-19 19:18 UTCEG score recompute
  32. 2026-06-19 19:17 UTCGHSA enrichment
  33. 2026-06-18 18:13 UTCEG score recompute
  34. 2026-06-18 18:13 UTCGHSA enrichment
  35. 2026-06-18 17:52 UTCEPSS rescore
  36. 2026-06-17 17:53 UTCEPSS rescore
  37. 2026-06-17 16:54 UTCEG score recompute
  38. 2026-06-17 16:53 UTCGHSA enrichment
  39. 2026-06-16 15:48 UTCEG score recompute▲ 6.90
  40. 2026-06-16 15:47 UTCGHSA enrichment
  41. 2026-06-16 15:47 UTCNVD updateCVSS v3 → 6.9 · CVSS v4 → 6.9
  42. 2026-06-16 15:45 UTCEG score recompute
  43. 2026-06-16 15:44 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-10831?
CVE-2026-10831 is a medium vulnerability published on June 16, 2026. A denial-of-service vulnerability exists in NPort devices because of improper access control on the command port. The command interface does not properly validate whether a sender is associated with a valid data port session before accepting break signal commands. A remote attacker with network…
When was CVE-2026-10831 disclosed?
CVE-2026-10831 was first published in the National Vulnerability Database on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10831 actively exploited?
CVE-2026-10831 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-10831?
CVE-2026-10831 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-10831?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10831, 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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