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CVE Record

CVE-2018-18976: An issue was discovered in the Ascensia Contour NEXT ONE application for iOS and Android before 2019-01-15.

An issue was discovered in the Ascensia Contour NEXT ONE application for iOS and Android before 2019-01-15. An attacker may retrieve encrypted medical information of any user of the Ascensia cloud platform by performing Direct Object References with a series of user ID values. (This information can be decrypted through a different vulnerability.)

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2018-18976 describes a privacy flaw in the Ascensia Contour NEXT ONE mobile application ecosystem before January 15, 2019. The reported issue allowed encrypted medical information for other cloud users to be retrieved by changing user ID references. Medical data exposure makes this serious, but the source bundle does not prove active exploitation.

Executive priority

Treat this as a high-priority privacy and vendor-risk review if your organization supported or recommended this app during the affected period. The main urgency is potential medical information exposure, not confirmed current compromise.

Technical view

The CVE describes an insecure direct object reference affecting Ascensia Contour NEXT ONE iOS and Android application use of the Ascensia cloud platform before 2019-01-15. An attacker could enumerate user ID values to retrieve encrypted medical information. The CVE notes decryption depended on a separate vulnerability, which is not detailed here.

Likely exposure

Exposure is most relevant to organizations or individuals who used Ascensia Contour NEXT ONE mobile apps connected to Ascensia cloud before January 15, 2019. The bundle does not provide exact app versions, CPEs, deployment counts, or whether current cloud endpoints remain affected.

Exploitation context

The CVE source describes unauthorized retrieval through direct object references and sequential user ID values. CISA KEV is false in the bundle, and no cited source states active exploitation. The data was described as encrypted, with decryption requiring a different vulnerability.

Researcher notes

Evidence is sparse: no CVSS, CWE, affected version matrix, or confirmed fix details are included. Analysis should stay bounded to the IDOR description, the pre-2019-01-15 affected window, and the note that decryption relies on a separate vulnerability.

Mitigation direction

  • Check Ascensia guidance for fixed app and cloud service status.
  • Ensure pre-2019-01-15 mobile app builds are no longer used.
  • Review vendor communications for breach, privacy, or remediation notices.
  • Assess whether affected users require privacy-risk review.
  • Preserve relevant vendor logs or notices for compliance review.

Validation and detection

  • Inventory any historical Contour NEXT ONE app usage before 2019-01-15.
  • Confirm deployed app versions were updated after the affected period.
  • Ask Ascensia whether object-level authorization controls were remediated.
  • Review logs for abnormal access patterns involving many user IDs.
  • Document whether encrypted medical data was exposed or decrypted.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.