Security readout for executives and security teams
Plain-English summary
Some Sierra Wireless MGOS versions may let an unauthenticated adjacent-network attacker read log files by requesting them directly. The main business risk is sensitive operational data exposure through logs. The provided sources do not show active exploitation, and KEV is false.
Executive priority
Prioritize remediation for deployed Sierra Wireless MGOS assets in operational or remote environments. This is not rated critical, but log exposure can disclose credentials, network details, or operational data that supports later compromise.
Technical view
CVE-2019-13988 affects Sierra Wireless MGOS before 3.15.2 and MGOS 4.x before 4.3. It is described as direct request, also called forced browsing, allowing log file reads. CVSS 3.1 is 6.5 with high confidentiality impact and no integrity or availability impact.
Likely exposure
Exposure is most likely in environments running affected MGOS versions where management or web-accessible interfaces are reachable from adjacent networks. The source bundle does not identify specific device models, deployment defaults, or internet exposure conditions.
Exploitation context
The source bundle supports unauthenticated adjacent-network access with low attack complexity and no user interaction. It does not cite public exploitation, proof-of-concept activity, or CISA KEV listing. Treat exploitation status as unconfirmed.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, and Sierra Wireless references. No CWE is provided, affected CPEs are absent, and device model scope is not specified. Avoid assuming internet exploitability without local exposure evidence.
Mitigation direction
- Upgrade MGOS 3.x deployments to 3.15.2 or later, as applicable.
- Upgrade MGOS 4.x deployments to 4.3 or later, as applicable.
- Review Sierra Wireless security guidance before making production changes.
- Restrict management and log-accessible interfaces to trusted administrative networks.
- Review logs for sensitive data that should not be stored or exposed.
Validation and detection
- Inventory Sierra Wireless MGOS deployments and record exact firmware versions.
- Confirm no systems run MGOS before 3.15.2 or 4.x before 4.3.
- Verify administrative interfaces are not reachable from untrusted adjacent networks.
- Review access controls for log file paths without performing unauthorized access.
- Check vendor advisories for any model-specific guidance missing from the CVE summary.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2019-13988 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.