Security readout for executives and security teams
Plain-English summary
This CVE concerns Comcast firmware on Cisco DPC3939 devices where remote attackers can compute password-of-the-day values. In business terms, a device-specific administrative protection may be predictable. The public record does not provide CVSS, confirmed exploitation, patch status, or detailed impact.
Executive priority
Treat this as an exposure-validation task first. The issue could affect administrative trust on a network gateway, but urgency depends on whether affected devices are deployed and remotely reachable.
Technical view
CVE-2017-9486 identifies an unspecified method to compute password-of-the-day values for Cisco DPC3939 devices running Comcast firmware dpc3939-P20-18-v303r20421746-170221a-CMCST. Sources do not describe the vector, prerequisites, affected firmware beyond the named build, or remediation.
Likely exposure
Exposure appears limited to Cisco DPC3939 devices running the named Comcast firmware build. Organizations should prioritize internet-facing or remotely managed devices, but the sources do not define broader product or version impact.
Exploitation context
The CVE states remote attackers can compute password-of-the-day values, but no KEV listing or provided source confirms active exploitation. The public details are sparse and do not include exploit workflow.
Researcher notes
The record is under-specified: no CVSS, CWE, detailed vector, prerequisites, or fix are present in the supplied sources. Avoid extrapolating beyond the named Comcast firmware on Cisco DPC3939 devices.
Mitigation direction
- Identify any Cisco DPC3939 devices using the named Comcast firmware build.
- Check Comcast, Cisco, or device-provider guidance for firmware updates or replacement advice.
- Disable or restrict remote management where operationally possible.
- Limit administrative access to trusted management networks.
- Monitor for unexpected configuration changes or administrative logins.
Validation and detection
- Inventory deployed gateway model and exact firmware version.
- Confirm whether management interfaces are reachable from untrusted networks.
- Review vendor advisories or support channels for remediation status.
- Check administrative logs for unexpected access or configuration changes.
- Document any exposed affected devices for remediation tracking.
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-2017-9486 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/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-29.password-of-the-day.txtCVE 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.