Security readout for executives and security teams
Plain-English summary
CVE-2020-27129 affects Cisco SD-WAN vManage. A highly privileged authenticated local attacker could abuse weak command validation in a remote management CLI path to inject commands and potentially gain elevated privileges. This is not an unauthenticated internet-wide issue, but compromise of a vManage administrator context could be business-significant.
Executive priority
Treat as a targeted administrative-plane risk. Prioritize if Cisco SD-WAN vManage is used in production, especially where many administrators or weak management-network controls exist. It is moderate urgency unless Cisco guidance shows an affected deployed version or suspicious activity.
Technical view
The issue is command injection in Cisco SD-WAN vManage Software’s remote management feature, mapped to CWE-88. CVSS 3.1 is 6.7 with local attack vector, low complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to organizations running Cisco SD-WAN vManage Software where an attacker already has high-privilege local/authenticated access to the affected application path. The source bundle does not provide affected version ranges.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not marked CISA KEV. Exploitation requires authenticated high-privilege access, reducing broad attack likelihood, but successful abuse could materially increase attacker control over vManage.
Researcher notes
Evidence is limited to the CVE metadata and Cisco advisory reference. The bundle does not include version ranges, fixed releases, or proof of exploitation. Avoid assuming internet-exposed unauthenticated risk; CVSS specifies local access and high privileges required.
Mitigation direction
- Review Cisco’s advisory for affected releases and official fixed software guidance.
- Restrict vManage administrative access to trusted operators and management networks.
- Audit privileged vManage accounts and remove unnecessary access.
- Monitor vManage administrative activity for unexpected remote management CLI use.
Validation and detection
- Inventory Cisco SD-WAN vManage deployments and record software versions.
- Compare deployed versions against Cisco’s advisory once vendor details are reviewed.
- Confirm only authorized administrators can reach vManage management interfaces.
- Review logs for suspicious authenticated management requests or privilege changes.
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-88: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter 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 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-2020-27129 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
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/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:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20201104 Cisco SD-WAN vManage Software Command Injection 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 Neutralization of Argument Delimiters in a Command ('Argument Injection')
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.