Security readout for executives and security teams
Plain-English summary
This CVE describes critical flaws in Cisco Smart Software Manager Satellite web UI that could let an unauthenticated remote attacker run commands on the appliance operating system. Business urgency is high because compromise could affect confidentiality, integrity, and availability of a licensing-management system.
Executive priority
Treat this as urgent for any reachable deployment. The combination of unauthenticated network access and operating-system command execution creates a credible path to full appliance compromise, even though active exploitation is not shown in the supplied evidence.
Technical view
The supplied record describes multiple web UI command injection vulnerabilities in Cisco Smart Software Manager Satellite / Smart Software Manager On-Prem. CVSS 3.1 is 9.8, network reachable, low complexity, no privileges, and no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely where Cisco Smart Software Manager Satellite or On-Prem is deployed and its web UI is reachable by untrusted networks. The supplied bundle does not specify affected version ranges, so teams must confirm applicability against Cisco’s advisory.
Exploitation context
The provided bundle does not state active exploitation, and KEV is false. The risk is still severe because the described condition is unauthenticated remote command execution through a web UI, which can provide broad system control if reachable.
Researcher notes
Evidence is limited to the CVE metadata and Cisco advisory reference. The bundle identifies CWE-20 and critical CVSS characteristics but does not include affected version ranges, fixed versions, workarounds, exploit observations, or detailed root-cause information.
Mitigation direction
- Review Cisco’s advisory for affected and fixed release details.
- Inventory Cisco Smart Software Manager Satellite or On-Prem deployments.
- Restrict web UI access to trusted management networks.
- Prioritize vendor-recommended updates or compensating controls.
- Monitor for unexpected administrative activity on affected systems.
Validation and detection
- Confirm whether the product is deployed in the environment.
- Check exact product version against Cisco’s advisory.
- Determine whether the web UI is internet or broadly network accessible.
- Review logs for suspicious access or unexpected system changes.
- Track remediation status until Cisco guidance is applied.
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-20: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-1139 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20210120 Cisco Smart Software Manager Satellite Web UI Command Injection 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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.