Security readout for executives and security teams
Plain-English summary
CVE-2019-11858 covers multiple buffer overflow flaws in the ALEOS AceManager Web API. Successful exploitation could affect confidentiality, integrity, and especially availability. The source data rates it medium severity, but exposed operational networking devices can still create business disruption if left outdated.
Executive priority
Treat this as a moderate-priority operational technology and edge-device hygiene issue. Prioritize internet-facing or business-critical ALEOS deployments, then complete firmware validation across the fleet.
Technical view
The CVE describes multiple network-reachable buffer overflows in AceManager Web API in ALEOS versions before 4.13.0, 4.9.5, and 4.4.9. CVSS 3.1 is 5.7, with low attack complexity, high privileges required, user interaction required, and high availability impact.
Likely exposure
Exposure is likely limited to organizations running ALEOS devices with AceManager Web API on versions older than the fixed releases. The provided affected-product metadata is incomplete, so confirm exact device models and firmware branches against Sierra Wireless guidance.
Exploitation context
The provided bundle does not show CISA KEV listing or other evidence of active exploitation. The CVSS vector indicates exploitation requires high privileges and user interaction, reducing broad opportunistic risk, while availability impact remains significant.
Researcher notes
The source bundle lacks specific affected CPEs, device models, CWE mappings, and exploit details. Analysis should remain tied to ALEOS AceManager Web API and the fixed-version thresholds stated in the CVE data.
Mitigation direction
- Upgrade affected ALEOS branches to 4.13.0, 4.9.5, 4.4.9, or vendor-recommended later releases.
- Review Sierra Wireless bulletin SWI-PSA-2020-004 for device-specific upgrade guidance.
- If upgrades cannot proceed, ask the vendor for supported interim controls.
Validation and detection
- Inventory ALEOS devices that use the AceManager Web API.
- Record ALEOS firmware versions and compare them against the fixed release thresholds.
- Confirm remediation by rechecking firmware versions after maintenance.
- Track CVE-2019-11858 in vulnerability management until all affected devices are resolved.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-11858 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:H
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:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:H0.94.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.7MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2020-004/CVE reference · x_refsource_MISC
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.