Security readout for executives and security teams
Plain-English summary
This flaw lets an already-authenticated administrator use Cisco IOS XE’s web UI to run operating-system commands as root. That can mean full control of the device. It is serious, but the provided sources say exploitation requires valid administrative access and do not show confirmed active exploitation.
Executive priority
Treat this as high priority for network infrastructure, especially where management interfaces are reachable. The attacker needs admin credentials, but successful exploitation can fully compromise the device with root-level command execution.
Technical view
CVE-2020-3211 is a Cisco IOS XE web UI command injection issue caused by improper input sanitization. A remote attacker with high privileges can submit crafted form input through the web UI and execute arbitrary commands as root on the underlying operating system.
Likely exposure
Exposure is most likely on Cisco IOS XE devices, specifically the listed IOS XE Software 16.10.1, where the web UI is enabled and reachable by administrative users over the network.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of active exploitation. Exploitation requires valid administrative access, network reachability to the web UI, and no user interaction.
Researcher notes
The available evidence supports authenticated command injection in IOS XE web UI with CVSS 7.2, PR:H, and root impact. The bundle does not provide exploit telemetry, workaround details, or a complete affected-version matrix beyond IOS XE 16.10.1.
Mitigation direction
- Check Cisco’s advisory for affected releases and fixed IOS XE guidance.
- Prioritize remediation for internet-reachable or broadly reachable management interfaces.
- Restrict web UI management access to trusted admin networks or VPN paths.
- Review administrative accounts and remove unnecessary privileged access.
- Monitor Cisco guidance for any updated workarounds or corrected software details.
Validation and detection
- Inventory Cisco IOS XE devices and versions, especially 16.10.1.
- Confirm whether the web UI is enabled on each device.
- Verify management interfaces are not exposed beyond trusted administrators.
- Review privileged account lists for stale or unnecessary access.
- Check Cisco advisory applicability against deployed IOS XE releases.
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-77: 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-2020-3211 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
- High
- CVSS
- 7.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/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:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.2HighVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200603 Cisco IOS XE Software Web UI 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 Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.