Security readout for executives and security teams
Plain-English summary
Cisco Firepower Management Center exposed some sensitive configuration values in clear text inside its administrative GUI. A remote attacker would need valid low-privileged credentials, so this is not an unauthenticated internet worm risk. The business concern is leakage of security configuration details that could help further compromise or weaken defenses.
Executive priority
Treat as a scheduled but meaningful remediation item for FMC environments. It is lower urgency than unauthenticated code execution, but it affects a security management platform and may expose details that improve an attacker's next move.
Technical view
The flaw is in FMC's web-based GUI configuration manager. Because sensitive information was not properly encrypted, an authenticated remote user with low privileges could navigate to certain configurations and view sensitive parameters. CVSS 3.1 is 4.3: network reachable, low complexity, low privileges, no user interaction, confidentiality impact only.
Likely exposure
Exposure is limited to Cisco Firepower Management Center deployments where affected software is running and low-privileged GUI credentials exist or are compromised. The bundle does not provide affected version ranges, so owners should use Cisco's advisory to map installed releases to fixed releases.
Exploitation context
The source bundle does not show KEV listing or active exploitation. Exploitation requires valid low-privileged access to the FMC GUI and knowledge of where sensitive configuration information appears. Cisco says software updates are available and no workarounds address the vulnerability.
Researcher notes
Evidence supports an authenticated information disclosure caused by improper encryption of sensitive GUI-stored configuration data, mapped to CWE-317. The bundle does not include affected version ranges, exploit telemetry, or detailed fixed-release data, so validation depends on Cisco's advisory.
Mitigation direction
- Apply Cisco FMC software updates identified in the Cisco advisory.
- Use Cisco guidance to determine affected and fixed release mapping.
- Restrict FMC GUI access to approved administrative networks.
- Review and remove unnecessary low-privileged FMC GUI accounts.
- Monitor FMC authentication and configuration access for unusual activity.
Validation and detection
- Inventory all Cisco FMC instances and installed software versions.
- Compare installed versions against Cisco's advisory and fixed-release guidance.
- Confirm the FMC GUI is not broadly reachable from untrusted networks.
- Review FMC user roles for least-privilege alignment.
- Check logs for unexpected low-privileged GUI access.
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-317: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2021-34750 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
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- cisco-sa-fmc-infodisc-Ft2WVmNUCVE reference
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.
Cleartext Storage of Sensitive Information in GUI
Cleartext Storage of Sensitive Information in GUI represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.