Security readout for executives and security teams
Plain-English summary
CVE-2018-20381 describes a credential disclosure issue in Technicolor DPC2320 devices running the named dpc2300r2 firmware build. If the device’s SNMP interface is reachable, a remote party may be able to retrieve credentials from sensitive SNMP data. Public sources do not provide a CVSS score, patch status, or evidence of active exploitation.
Executive priority
Prioritize if these cable modem/router devices are present in production or customer networks, especially with reachable SNMP. The issue can expose credentials, but current source evidence is incomplete on prevalence, scoring, exploitation, and remediation availability.
Technical view
The CVE record states that Technicolor DPC2320 dpc2300r2-v202r1244101-150420a-v6 devices expose credentials through specific SNMP OID requests. The record has no CVSS, CWE, CPE, or vendor advisory data in the supplied bundle. KEV status is false, so active exploitation is not established by these sources.
Likely exposure
Exposure is most likely where affected Technicolor DPC2320 devices are still deployed and SNMP is reachable from untrusted networks or shared management segments. The bundle does not identify all affected hardware revisions, service-provider variants, or patched firmware versions.
Exploitation context
The public record describes remote credential discovery through SNMP data access. The supplied sources do not show inclusion in CISA KEV, active exploitation, public weaponization status, or a confirmed vendor fix. Treat internet-exposed SNMP on these devices as a priority exposure until assessed.
Researcher notes
The strongest evidence is the CVE description and linked sensitive-OID references. Missing data includes CVSS, CWE, CPE mapping, affected-version range, authentication assumptions, and vendor remediation. Avoid broad product claims beyond Technicolor DPC2320 with the specified firmware build.
Mitigation direction
- Inventory Technicolor DPC2320 deployments and record firmware versions.
- Check Technicolor or ISP guidance for fixed firmware or replacement options.
- Restrict SNMP management access to trusted administrative networks only.
- Disable SNMP where it is not operationally required.
- Rotate credentials that may have been exposed through device management data.
Validation and detection
- Confirm whether any DPC2320 devices run the named firmware build.
- Review network controls for SNMP reachability from untrusted networks.
- Check device configuration for enabled SNMP management.
- Look for historical SNMP access from unexpected sources.
- Document whether vendor or ISP remediation guidance exists.
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.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-20381 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.