Security readout for executives and security teams
Plain-English summary
This flaw affects Samsung SmartThings Hub STH-ETH-250 firmware 0.20.17. A vulnerable HTTP server component can overflow memory when handling an overly long database field value. Successful exploitation could compromise confidentiality, integrity, and availability, but the CVSS vector indicates local access, high privileges, and high complexity are required.
Executive priority
Treat this as a targeted local-risk issue, not an internet-scale emergency. Prioritize it where SmartThings hubs bridge sensitive networks, support physical operations, or remain on old firmware without vendor support.
Technical view
CVE-2018-3915 is a stack-based buffer overflow in the video-core HTTP server during database field retrieval. The source description identifies an unsafe strcpy into a 64-byte destination buffer using the attacker-controlled bucket value. The published CVSS v3.0 score is 7.5 with AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
Likely exposure
Exposure appears limited to Samsung SmartThings Hub STH-ETH-250 devices running firmware 0.20.17. The provided sources do not identify other affected versions or products. The local, high-privilege CVSS prerequisites reduce broad internet exposure but matter in compromised local networks or poorly controlled administrative environments.
Exploitation context
The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. The vulnerability is described as exploitable, but the reported attack prerequisites are restrictive: local access, high privileges, no user interaction, and high attack complexity.
Researcher notes
Key evidence is narrow: one affected model and firmware version, one Talos report reference, and the CVE description. Do not generalize to all SmartThings hubs without vendor evidence. Validation should focus on asset identity, firmware version, reachable local services, and compensating controls.
Mitigation direction
- Inventory Samsung SmartThings Hub STH-ETH-250 devices and firmware versions.
- Check Samsung or SmartThings guidance for fixed firmware or replacement direction.
- Prioritize updating or retiring devices confirmed on firmware 0.20.17.
- Restrict management and local network access to trusted administrators only.
- Segment smart hub networks away from sensitive business systems.
Validation and detection
- Confirm whether any STH-ETH-250 hubs run firmware 0.20.17.
- Verify update status against current Samsung or SmartThings vendor guidance.
- Review network paths that can reach the hub HTTP service.
- Check administrative access controls for unnecessary local privileged users.
- Look for unexplained hub crashes or resets in operational logs.
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.
Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-3915 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
- 7.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:H/PR:H/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:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H0.86Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.5HighVector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0581CVE 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.