Security readout for executives and security teams
Plain-English summary
CVE-2018-20438 describes a Technicolor TC7110.AR firmware issue where remote SNMP queries can reveal Wi-Fi credentials. For executives, the business risk is unauthorized wireless access, customer privacy exposure, and network intrusion if affected gateways expose SNMP to untrusted users.
Executive priority
Prioritize remediation where affected gateways support business, customer, or operational networks. The issue can expose Wi-Fi passwords, but evidence is incomplete on patch availability and real-world exploitation, so urgency depends on SNMP reachability.
Technical view
The CVE record states that Technicolor TC7110.AR STD3.38.03 devices disclose Wi-Fi credentials through specific SNMP object identifiers. No CVSS score, CWE, official vendor advisory, patch details, or broad affected-version matrix is included in the supplied sources.
Likely exposure
Exposure appears limited to Technicolor TC7110.AR STD3.38.03 devices with reachable SNMP. Risk is highest for ISP-managed or customer-premises gateways where SNMP is enabled from WAN, shared networks, or other untrusted segments.
Exploitation context
The public record describes credential discovery through SNMP requests. The CVE is not listed as CISA KEV in the supplied bundle, and no cited source confirms active exploitation. Public disclosure exists, but operational exploit status is not established here.
Researcher notes
The supplied CVE data is sparse: affected CPEs, CVSS, CWE, and official fix information are absent. Analysis should center on confirming device model, firmware version, SNMP exposure, and whether the referenced disclosure matches deployed configurations.
Mitigation direction
- Identify any Technicolor TC7110.AR STD3.38.03 devices in service.
- Check vendor or ISP guidance for firmware updates or replacement options.
- Disable SNMP where it is not operationally required.
- Restrict SNMP access to trusted management networks only.
- Rotate Wi-Fi credentials after remediation or device replacement.
- Retire affected devices if no supported fix is available.
Validation and detection
- Confirm whether deployed gateways match Technicolor TC7110.AR STD3.38.03.
- Review device configuration for SNMP enabled state and allowed source networks.
- Check firewall policy for SNMP exposure from WAN or guest networks.
- Review network logs for unexpected SNMP traffic to gateway devices.
- Verify Wi-Fi credential rotation after remediation.
- Document unresolved devices pending vendor or ISP guidance.
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-2018-20438 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://misteralfa-hack.blogspot.com/2018/12/technicolor-passwords-wireless-via-snmp.htmlCVE 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.