Security readout for executives and security teams
Plain-English summary
Cisco Unified CDM had a restricted-shell escape flaw. A logged-in local user could break out of intended command limits and run additional commands as that restricted user. The sources say this does not grant root privileges, but it can weaken administrative separation and affect confidentiality, integrity, and availability.
Executive priority
Treat this as a moderate-priority hardening and patch-management item. It is not shown as actively exploited, but it can expand the impact of a compromised or misused local account on communications management infrastructure.
Technical view
CVE-2019-1911 is caused by insufficient input validation in the Cisco Unified Communications Domain Manager CLI. An authenticated local attacker with shell access could submit crafted commands to escape the restricted shell and access commands available to the restricted shell user. CVSS v3.0 score is 5.3, with local access and low privileges required.
Likely exposure
Exposure is limited to organizations running Cisco Unified Communications Domain Manager where users or operators have local authenticated CLI access. The bundle does not identify specific affected versions, so asset owners must compare installed versions against Cisco’s advisory.
Exploitation context
The provided sources do not support active exploitation, and the CVE is not listed as KEV. Exploitation requires authenticated local access, lowering internet-scale risk but leaving insider, compromised-account, and shared-administration scenarios relevant.
Researcher notes
The bundle gives CVSS 5.3, CWE-216, local attack vector, low privileges required, and no root escalation. Affected versions are unspecified in the bundle, so version-level conclusions require Cisco advisory confirmation.
Mitigation direction
- Check Cisco’s advisory for affected and fixed Cisco Unified CDM versions.
- Upgrade or apply vendor guidance where Cisco identifies a supported fix.
- Restrict local CLI access to only trusted administrative users.
- Review accounts with shell access and remove unnecessary privileges.
- Monitor administrative CLI activity for unexpected command behavior.
Validation and detection
- Inventory Cisco Unified Communications Domain Manager deployments.
- Record installed software versions and compare them with Cisco advisory guidance.
- Identify users with local or CLI access to affected systems.
- Confirm restricted-shell access is limited to required administrators.
- Review logs for unusual administrative command activity.
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-216: 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-2019-1911 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
- 5.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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:L/UI:N/S:U/C:L/I:L/A:L1.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.3MediumVector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- 20190703 Cisco Unified Communications Domain Manager 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.
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.