Security readout for executives and security teams
Plain-English summary
Cisco CMX has a restricted-shell weakness that can let someone who already has administrative credentials break out of CLI limits. This is not a remote unauthenticated issue, but it could expand what a compromised or malicious admin account can do on a CMX system.
Executive priority
Treat this as a moderate-priority hardening and remediation item. It is less urgent than internet-facing remote code execution, but it matters because compromised admin access could expose sensitive CMX data and weaken operational control.
Technical view
The vulnerability is in Cisco Connected Mobile Experiences CLI restricted shell controls. An authenticated local attacker with administrative credentials could send crafted commands to bypass restrictions and run normally unauthorized commands with non-root privileges. The CVSS v3.0 score is 5.1 with local attack vector and high privileges required.
Likely exposure
Exposure is limited to Cisco Connected Mobile Experiences deployments where an attacker can obtain local administrative CLI access. The provided sources do not list specific affected versions beyond the product name.
Exploitation context
The source bundle does not indicate active exploitation, and KEV status is false. Exploitation requires valid administrative credentials and local CLI access, so risk is mainly from credential compromise, insider misuse, or weak administrative access controls.
Researcher notes
The public bundle identifies the product and vulnerability mechanics but does not include affected version ranges or patch details. Do not assume broader Cisco product impact. Validation should focus on CMX presence, administrative access paths, and Cisco advisory version guidance.
Mitigation direction
- Review Cisco’s advisory for affected versions and official fixed software guidance.
- Restrict CMX administrative CLI access to trusted administrators only.
- Enforce strong authentication and rotate CMX administrative credentials where exposure is suspected.
- Monitor CMX administrative activity for unexpected restricted-shell behavior.
- Prioritize remediation where CMX manages sensitive location or operational data.
Validation and detection
- Inventory Cisco Connected Mobile Experiences systems in the environment.
- Identify installed CMX versions and compare them with Cisco’s advisory.
- Confirm who has administrative CLI access to each CMX system.
- Review recent CMX admin activity for unauthorized command attempts.
- Document compensating controls if official remediation cannot be applied immediately.
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-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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-2020-3151 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
- 5.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/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:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N0.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.1MediumVector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200819 Cisco Connected Mobile Experiences Restricted Shell Escape 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 Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.