Security readout for executives and security teams
Plain-English summary
This Cisco FTD flaw lets a highly privileged local user inside one multi-instance FTD container break out to the host. If exploited, they could gain root-level control in the host namespace and affect other FTD instances on the same system.
Executive priority
Treat this as high priority where Cisco FTD multi-instance is used, especially in shared or segmented security deployments. The required attacker privileges reduce broad internet risk, but successful exploitation could undermine isolation between instances.
Technical view
CVE-2019-12674 concerns insufficient filesystem protections in Cisco Firepower Threat Defense Software's multi-instance feature. An authenticated local attacker with high privileges could modify critical underlying filesystem files, escape their instance container, and execute commands as root in the host namespace.
Likely exposure
Exposure is most likely in Cisco FTD deployments using the multi-instance feature. The source bundle does not identify specific affected releases, so teams must compare their FTD versions and configurations against Cisco's advisory.
Exploitation context
The source describes local authenticated exploitation with high privileges required. The bundle does not cite active exploitation, public exploit availability, or CISA KEV inclusion, so active exploitation should not be assumed from these sources.
Researcher notes
Key constraints are local access, authentication, and high privileges. The important security boundary is the FTD instance container versus the host namespace. The bundle does not include affected version ranges, patch names, or exploitation telemetry.
Mitigation direction
- Check Cisco's advisory for affected and fixed FTD releases.
- Upgrade or patch multi-instance FTD deployments according to Cisco guidance.
- Restrict local authenticated access to FTD instances to trusted administrators.
- Review hardening controls around filesystem access and administrative roles.
- Monitor for unauthorized critical filesystem changes or unexpected root-level activity.
Validation and detection
- Inventory Cisco FTD systems and identify multi-instance deployments.
- Verify installed FTD versions against Cisco's advisory.
- Confirm whether local administrative access is tightly limited and reviewed.
- Check logs for suspicious filesystem modification or host-namespace activity.
- Document patch status, compensating controls, and any remaining exceptions.
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-2019-12674 mapping review
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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.