Security readout for executives and security teams
Plain-English summary
This CVE describes a credential disclosure issue in specific Ubee cable gateway models. If SNMP is reachable, an attacker may be able to query sensitive management data and discover credentials. The source bundle does not provide a CVSS score, vendor advisory, or confirmed patch.
Executive priority
Prioritize if the organization manages or depends on the affected Ubee models, especially in exposed network locations. Credential disclosure can undermine device control, but urgency depends on confirmed deployment and SNMP reachability.
Technical view
Ubee DVW2108 firmware 6.28.1017 and DVW2110 firmware 6.28.2012 reportedly expose credentials through vendor-private SNMP object identifiers. The record identifies remote credential discovery through SNMP requests, but does not provide exploit maturity, authentication requirements, or remediation details.
Likely exposure
Exposure is most likely where the named Ubee models and firmware versions are deployed with SNMP reachable from untrusted networks. Internet-facing ISP-managed gateways, legacy customer premises equipment, and flat management networks deserve attention.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Public references indicate sensitive SNMP OID password leakage, but the bundle does not include a vendor fix, full technical advisory, or exploitation timeline.
Researcher notes
Evidence is limited to the CVE description and public references. The core issue is SNMP-based credential disclosure on two named models and firmware versions. No CVSS vector, CWE, vendor advisory, KEV status, or patch details are provided in the bundle.
Mitigation direction
- Identify any Ubee DVW2108 or DVW2110 devices and firmware versions in service.
- Disable SNMP where it is not operationally required.
- Restrict SNMP access to trusted management hosts and networks only.
- Block SNMP from the public internet and untrusted internal segments.
- Check Ubee or ISP guidance for firmware updates, replacement, or configuration remediation.
- Rotate exposed management credentials after access is restricted or firmware is remediated.
Validation and detection
- Inventory edge and customer-premises devices for the named Ubee models and firmware versions.
- Review firewall rules for SNMP exposure from internet or untrusted networks.
- Confirm whether SNMP is enabled and who can reach it.
- Check device management logs for unexpected SNMP access where logging exists.
- Verify remediation by confirming SNMP is disabled or restricted to approved management sources.
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-2018-20400 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
- 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://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csvCVE reference · x_refsource_MISC
- https://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.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.