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CVE-2026-27850

Due to an improperly configured firewall rule, the router will accept any connection on the WAN port with the source port 5222, exposing all services which are normally only accessible through the local network. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a2313cdf1b657563f2d73c8d660f7439cd640edafde2e30d9ce4b3d32262a4e7
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":"MX4200","vendor":"Linksys","versions":[{"status":"affected","version":"1.0.13.210200"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cb8c232a6295e6643af8f26003cfbf9eccc2ecfa37c91856b6913ab69f8fed4c · sha256:45d56434f7a1e1c2… · /containers/cna/affected/1

{"defaultStatus":"affected","product":"MR9600","vendor":"Linksys","versions":[{"status":"affected","version":"1.0.4.205530"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cb8c232a6295e6643af8f26003cfbf9eccc2ecfa37c91856b6913ab69f8fed4c · sha256:45d56434f7a1e1c2… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"MX4200","vendor":"Linksys","versions":[{"status":"affected","version":"1.0.13.210200"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cb8c232a6295e6643af8f26003cfbf9eccc2ecfa37c91856b6913ab69f8fed4c · sha256:45d56434f7a1e1c2… · /containers/cna/affected/1
{"defaultStatus":"affected","product":"MR9600","vendor":"Linksys","versions":[{"status":"affected","version":"1.0.4.205530"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cb8c232a6295e6643af8f26003cfbf9eccc2ecfa37c91856b6913ab69f8fed4c · sha256:45d56434f7a1e1c2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cb8c232a6295e6643af8f26003cfbf9eccc2ecfa37c91856b6913ab69f8fed4c · sha256:45d56434f7a1e1c2… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"description":"cwe-940 Improper Verification of Source of a Communication Channel","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cb8c232a6295e6643af8f26003cfbf9eccc2ecfa37c91856b6913ab69f8fed4c · sha256:45d56434f7a1e1c2… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"tags":["third-party-advisory","technical-description"],"url":"https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-014.txt"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cb8c232a6295e6643af8f26003cfbf9eccc2ecfa37c91856b6913ab69f8fed4c · sha256:45d56434f7a1e1c2… · /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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