Security readout for executives and security teams
Plain-English summary
This CVE affects Insteon Hub message handling. A malicious authenticated command through PubNub can overflow memory and potentially let an attacker impact confidentiality, integrity, and availability. The sources identify firmware version 1012 in the description, but do not provide a patch status.
Executive priority
Treat this as high priority for environments using Insteon Hubs in business, building, or security workflows. The impact is severe, but the public bundle does not establish active exploitation or a named patch.
Technical view
CVE-2017-16335 is a stack-based buffer overflow in the Insteon Hub PubNub "cc" channel handler. In cmd s_event_var, the s_offset value is copied with strcpy into a 32-byte stack buffer. Oversized input can overwrite adjacent stack data. CVSS is 8.5, high severity.
Likely exposure
Exposure is most likely where Insteon Hub devices run firmware 1012 and use the PubNub-backed message path. The source bundle lists affected versions as not specified, so teams should validate exact firmware and model exposure against vendor or asset records.
Exploitation context
The bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation requires an authenticated HTTP request and is rated high complexity, but successful exploitation could affect confidentiality, integrity, and availability.
Researcher notes
The key technical detail is unsafe strcpy handling of s_offset into a 32-byte stack buffer in the PubNub cc channel path. Avoid assuming broader product coverage beyond Insteon Hub and firmware 1012 unless vendor data confirms it.
Mitigation direction
- Check Insteon guidance for fixed firmware, replacement, or supported remediation.
- Inventory Insteon Hub devices and identify firmware version 1012.
- Remove or retire unsupported affected hubs where no vendor fix exists.
- Restrict administrative and cloud account access to trusted users only.
- Monitor unusual Insteon/PubNub activity involving hub command handling.
Validation and detection
- Confirm whether any Insteon Hub runs firmware version 1012.
- Verify whether PubNub-based hub messaging is enabled or required.
- Review who has authenticated access to Insteon hub controls.
- Check vendor advisories or support records for remediation status.
- Prioritize any hub supporting physical security or safety workflows.
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.
CWE-121: Exact CWE lookup
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Open ATT&CK lookupCVE-2017-16335 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/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:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H1.86Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.5HighVector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2017-0483CVE reference
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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.