Security readout for executives and security teams
Plain-English summary
This flaw affects Cisco Firepower Management Center, a security management platform. A logged-in remote attacker with high privileges could bypass FMC restrictions and reach parts of the appliance filesystem. It is not listed as known exploited in the provided sources, but compromise of a security management console can create operational risk.
Executive priority
Handle through the normal vulnerability remediation cycle, with priority for internet-reachable or broadly reachable FMC consoles. The issue requires high privileges, but FMC manages security infrastructure, so exposure and account hygiene matter.
Technical view
CVE-2019-12691 is a CWE-22 directory traversal issue in Cisco FMC Software's web-based management interface. Insufficient input validation allows an authenticated remote attacker to send a crafted HTTP request and bypass software restrictions, gaining access to the underlying filesystem. The CVSS 3.0 score is 4.1 with high privileges required.
Likely exposure
Exposure is limited to Cisco Firepower Management Center deployments with the vulnerable web management interface. Risk increases where FMC administration is reachable from broad internal networks, VPN users, or untrusted paths. The source bundle does not specify affected versions.
Exploitation context
The provided sources describe authenticated remote exploitation requiring high privileges and low attack complexity. The bundle does not identify public exploitation, KEV listing, exploit availability, or observed attacks. Treat this as a privileged misuse or post-compromise risk unless Cisco guidance indicates otherwise.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, CWE-22 classification, KEV false status, and Cisco advisory reference. The bundle does not provide affected version ranges, fixed versions, workarounds, or exploit telemetry, so avoid claims beyond authenticated directory traversal impact.
Mitigation direction
- Review Cisco's advisory for affected releases and fixed software guidance.
- Limit FMC management interface access to trusted administrative networks.
- Remove stale or unnecessary privileged FMC accounts.
- Enforce strong authentication for FMC administrative access.
- Monitor Cisco guidance for any updated remediation details.
Validation and detection
- Inventory all Cisco FMC deployments and software versions.
- Confirm whether FMC web management is reachable from untrusted networks.
- Compare installed versions against Cisco's advisory.
- Review privileged FMC accounts for necessity and recent activity.
- Check logs for unusual management-interface access patterns.
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.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-12691 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
- Medium
- CVSS
- 4.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
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:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N2.31.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.1MediumVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20191002 Cisco Firepower Management Center Directory Traversal VulnerabilityCVE 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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.