Security readout for executives and security teams
Plain-English summary
CVE-2017-16277 is a high-severity memory corruption flaw in Insteon Hub firmware 1012. A logged-in attacker can send crafted commands through PubNub to overflow a small stack buffer, potentially taking control of the device or disrupting it.
Executive priority
Treat this as a targeted high-risk issue for environments using affected Insteon Hub devices. Business urgency depends on whether firmware 1012 exists and who can authenticate to the hub path.
Technical view
The flaw is a stack-based buffer overflow in the PubNub message handler for the Insteon Hub "cc" channel. In cmd sn_grp, the gcmd value is copied with strcpy into a 16-byte stack buffer, enabling arbitrary overwrite when oversized input is processed.
Likely exposure
Exposure appears limited to Insteon Hub devices running firmware 1012 where an attacker can make the required authenticated HTTP request through the PubNub service. The supplied data does not provide broader version ranges or CPEs.
Exploitation context
The CVSS vector is network-accessible but requires low privileges and high attack complexity. The bundle does not show CISA KEV listing or other evidence of active exploitation.
Researcher notes
Key evidence is from Talos and CVE records. The affected range is incomplete beyond firmware 1012, and the supplied sources do not name a patch. Avoid assuming other Insteon products are affected.
Mitigation direction
- Check Insteon or Talos guidance for supported firmware updates or vendor mitigation advice.
- Identify Insteon Hub devices and prioritize any running firmware version 1012.
- Limit hub access to trusted authenticated users until vendor guidance is confirmed.
- Monitor for unexpected authenticated PubNub or hub-management activity.
- Consider replacement or isolation if no supported remediation exists.
Validation and detection
- Inventory Insteon Hub assets and record firmware versions.
- Confirm whether firmware version 1012 is present in the environment.
- Review access paths that allow authenticated HTTP requests to the hub service.
- Check logs for unusual authenticated hub commands or PubNub-related activity.
- Document absence of vendor patch information if no guidance is available.
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
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2017-16277 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
- 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.