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CVE-2026-31848

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c02f95b0a0fea78c29cf9cbc0a0c1d9ebaaa5df3ddbff57a24e136030fb52749
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"Nebula 300+","vendor":"Nexxt Solutions","versions":[{"status":"affected","version":"<= 12.01.01.37"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8bdc6f3312f9c834a883b25835ae75dd9792960d6fa89fc0242fdaab779fbeec · sha256:9967f30578856d5e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8bdc6f3312f9c834a883b25835ae75dd9792960d6fa89fc0242fdaab779fbeec · sha256:9967f30578856d5e… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-312","description":"CWE-312 Cleartext Storage of Sensitive Information","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8bdc6f3312f9c834a883b25835ae75dd9792960d6fa89fc0242fdaab779fbeec · sha256:9967f30578856d5e… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"Firmware download","url":"https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8bdc6f3312f9c834a883b25835ae75dd9792960d6fa89fc0242fdaab779fbeec · sha256:9967f30578856d5e… · /containers/cna/references/1
{"name":"Official product page","url":"https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8bdc6f3312f9c834a883b25835ae75dd9792960d6fa89fc0242fdaab779fbeec · sha256:9967f30578856d5e… · /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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