Security readout for executives and security teams
Plain-English summary
This flaw affects Cisco Firepower Threat Defense systems using multi-instance operation. A highly privileged local user inside one FTD instance could break out of that instance and gain root-level control in the host namespace, potentially affecting other FTD instances on the same appliance.
Executive priority
Treat as high priority for affected security appliances, especially shared multi-instance platforms. It requires prior privileged local access, but successful exploitation could cross isolation boundaries and compromise other FTD instances.
Technical view
Cisco describes insufficient filesystem protections in the FTD multi-instance feature. Exploitation requires authenticated local access with high privileges, but has low attack complexity and no user interaction. Successful exploitation enables root command execution in the host namespace and may impact confidentiality, integrity, and availability across instances.
Likely exposure
Exposure is most likely where Cisco Firepower Threat Defense Software is deployed with the multi-instance feature enabled. The provided sources do not identify specific affected or fixed versions.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. The attack is local and authenticated, requiring high privileges before exploitation, so it is not a remote unauthenticated entry point.
Researcher notes
Key constraints are CVSS AV:L/PR:H and scope changed. The source bundle does not include fixed versions, exploit maturity, or detailed indicators. Avoid assuming broader Cisco products are affected beyond Cisco Firepower Threat Defense Software multi-instance deployments.
Mitigation direction
- Review Cisco’s advisory for affected and fixed FTD releases.
- Prioritize upgrades or mitigations named by Cisco for multi-instance deployments.
- Restrict local and administrative access to FTD instances.
- Audit whether multi-instance mode is enabled on production appliances.
- Monitor vendor guidance because the bundle omits fixed version details.
Validation and detection
- Inventory Cisco FTD appliances and record software versions.
- Confirm whether the multi-instance feature is enabled.
- Map local and administrative users with access to FTD instances.
- Review appliance logs for unexpected privileged filesystem or namespace activity.
- Verify remediation status against Cisco advisory 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
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CWE-216: Exact CWE lookup
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Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-12675 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
- High
- CVSS
- 8.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H1.56Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.2HighVector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20191002 Cisco Firepower Threat Defense Software Multi-instance Container Escape VulnerabilitiesCVE reference · vendor-advisory, x_refsource_CISCO
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.
DEPRECATED: Containment Errors (Container Errors)
DEPRECATED: Containment Errors (Container Errors) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.