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CVE Record

CVE-2019-11848: ALEOS AT Command API Abuse

An API abuse vulnerability exists in the AT command API of ALEOS before 4.13.0, 4.9.5, 4.4.9 due to lack of length checking when handling certain user-provided values.

MediumCVSS 4.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2019-11848 is a weakness in ALEOS AT command API input handling before fixed releases. An attacker would need high privileges and a difficult path, but successful abuse could affect confidentiality, integrity, and availability at a limited level. Business urgency depends on whether ALEOS devices expose this API in operational networks.

Executive priority

Treat as a targeted management-plane risk. Prioritize internet-exposed or broadly reachable ALEOS deployments first, then complete firmware upgrades and access-control validation during normal vulnerability remediation cycles.

Technical view

ALEOS before 4.13.0, 4.9.5, and 4.4.9 lacks length checking for certain user-provided values in the AT command API. The CVSS vector is network-accessible, high complexity, high privileges required, no user interaction, unchanged scope, and low C/I/A impact.

Likely exposure

Exposure is most plausible where ALEOS-managed devices run versions earlier than 4.13.0, 4.9.5, or 4.4.9 and allow privileged network access to the AT command API. The supplied affected product metadata is incomplete.

Exploitation context

The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS prerequisites indicate exploitation requires high privileges and high complexity, reducing broad opportunistic risk but still mattering for exposed management paths.

Researcher notes

Evidence is sparse: no CWE is listed and affected product metadata is marked n/a, while the description names ALEOS and fixed versions. Do not infer affected hardware models, exploit availability, or additional remediation beyond vendor guidance.

Mitigation direction

  • Inventory ALEOS devices and record firmware versions.
  • Upgrade to ALEOS 4.13.0, 4.9.5, 4.4.9, or later as applicable.
  • Review the Sierra Wireless bulletin for device-specific guidance.
  • Restrict AT command API access to trusted administration networks only.
  • Remove unnecessary external exposure of ALEOS management interfaces.

Validation and detection

  • Confirm no ALEOS device runs below the fixed release line.
  • Verify only authorized privileged administrators can reach the AT command API.
  • Review firewall, VPN, and segmentation rules protecting management access.
  • Check logs for unexpected privileged AT command API activity.
  • Document any devices requiring vendor-specific upgrade handling.
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

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-2019-11848 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4.1CVSS 3.1MediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L0.73.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.1Medium
CVSS 3.1 vector shape for CVE-2019-11848Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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.