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CVE Record

CVE-2019-11862: ALEOS SSH Service Allows Traffic Proxying

The SSH service on ALEOS before 4.12.0, 4.9.5, 4.4.9 allows traffic proxying.

HighCVSS 8.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2019-11862 affects the SSH service in ALEOS versions before 4.12.0, 4.9.5, and 4.4.9. The issue can allow traffic proxying through the device, creating a serious risk if management services are reachable from untrusted networks.

Executive priority

Prioritize exposed ALEOS devices because the issue affects a remote management service and carries high confidentiality, integrity, and availability impact. Lack of KEV evidence lowers emergency pressure, but internet-facing SSH should be addressed quickly.

Technical view

The CVE describes an unauthenticated network vulnerability in ALEOS SSH service behavior that permits traffic proxying. CVSS 3.1 is 8.1 high, with high impact to confidentiality, integrity, and availability, but high attack complexity. Public source data does not provide implementation detail or CWE classification.

Likely exposure

Exposure is most likely where ALEOS devices below the listed fixed versions have SSH enabled and reachable from external, partner, or broad internal networks. The source bundle does not provide a complete affected product inventory.

Exploitation context

The CVE is not listed as CISA KEV in the provided data, and the source bundle does not cite active exploitation. Treat internet-reachable SSH on affected ALEOS versions as the highest-risk scenario.

Researcher notes

Public data is sparse: no CWE, no detailed affected CPEs, and no exploit narrative are included. Analysis should stay centered on version exposure, SSH reachability, and the Sierra Wireless advisory.

Mitigation direction

  • Check Sierra Wireless technical bulletin SWI-PSA-2019-004 for vendor guidance.
  • Upgrade ALEOS to 4.12.0, 4.9.5, 4.4.9, or later as applicable.
  • Restrict SSH management access to trusted administration networks.
  • Disable SSH where it is not operationally required.
  • Review firewall and remote-access rules for exposed ALEOS management interfaces.

Validation and detection

  • Inventory ALEOS devices and record firmware versions.
  • Identify devices running ALEOS before 4.12.0, 4.9.5, or 4.4.9.
  • Confirm whether SSH is enabled on each device.
  • Check whether SSH is reachable from untrusted networks.
  • Verify remediation by confirming updated ALEOS versions and reduced SSH exposure.
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-2019-11862 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
High
CVSS
8.1 (3.1)
Known Exploited
No
Published

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

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
8.1CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.1High
CVSS 3.1 vector shape for CVE-2019-11862Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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.