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CVE-2026-10831

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:94afd9e05728d2809697c43301e1bfe56f5dd0c4df70c42de044766c3984a1a5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"NPort 6000 Series","vendor":"Moxa","versions":[{"lessThanOrEqual":"2.3","status":"affected","version":"1.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:170e733e878fadec840468f3c0cfaffa44cbc11622260bb947ed1bbf970b4a86 · sha256:85cd69acfc77ee73… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"CN2600 Series","vendor":"Moxa","versions":[{"lessThanOrEqual":"4.6","status":"affected","version":"1.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:170e733e878fadec840468f3c0cfaffa44cbc11622260bb947ed1bbf970b4a86 · sha256:85cd69acfc77ee73… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"NPort 6000 Series","vendor":"Moxa","versions":[{"lessThanOrEqual":"2.3","status":"affected","version":"1.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:170e733e878fadec840468f3c0cfaffa44cbc11622260bb947ed1bbf970b4a86 · sha256:85cd69acfc77ee73… · /containers/cna/affected/0
{"defaultStatus":"unaffected","product":"CN2600 Series","vendor":"Moxa","versions":[{"lessThanOrEqual":"4.6","status":"affected","version":"1.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:170e733e878fadec840468f3c0cfaffa44cbc11622260bb947ed1bbf970b4a86 · sha256:85cd69acfc77ee73… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:170e733e878fadec840468f3c0cfaffa44cbc11622260bb947ed1bbf970b4a86 · sha256:85cd69acfc77ee73… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:170e733e878fadec840468f3c0cfaffa44cbc11622260bb947ed1bbf970b4a86 · sha256:85cd69acfc77ee73… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"tags":["vendor-advisory"],"url":"https://www.moxa.com/en/support/product-support/security-advisory/mpsa-262370-cve-2026-10831-improper-authorization-vulnerability-in-serial-device-servers"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:170e733e878fadec840468f3c0cfaffa44cbc11622260bb947ed1bbf970b4a86 · sha256:85cd69acfc77ee73… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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