Security readout for executives and security teams
This issue concerns certain Cisco ASR 1000 and cBR-8 routers where a hidden engineering console on line-card motherboards could let someone with physical access reach the device operating system. The business risk is mainly for environments where router chassis, line cards, labs, depots, or shared facilities are not tightly controlled. Exposure is limited to organizations using the named Cisco router families with affected line cards and IOS XE versions. Internet scanning is not relevant because exploitation requires physical connection to the line-card console port. Prioritize sites where these routers protect core, edge, or broadband infrastructure and where physical custody is weaker. This is not a broad remote threat, but a successful local compromise could give full control of critical network equipment. Mitigation focus: Inventory Cisco ASR 1000 and cBR-8 deployments and installed line cards.; Verify IOS XE versions against the Cisco advisory and listed bug IDs.; Check Cisco guidance for fixed releases, replacements, or required remediation..
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
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ATT&CK lookup starting points
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CWE-264: Exact CWE lookup
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Open ATT&CK lookupCVE-2017-12239 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-ccCVE reference · x_refsource_CONFIRM
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.
Permissions, Privileges, and Access Controls
Permissions, Privileges, and Access Controls represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.