Security readout for executives and security teams
Plain-English summary
This issue affects Cisco Small Business RV016, RV042, RV082, RV320, and RV325 routers. If an attacker already has administrative web access, they may run operating system commands as root. The main business risk is full router compromise, including traffic interception, configuration tampering, and outage potential.
Executive priority
Treat as high priority for affected edge routers, especially if management is remotely reachable. Prioritize inventory, access restriction, credential review, and Cisco-guided firmware remediation before normal maintenance windows where feasible.
Technical view
CVE-2020-3274 is command injection in the routers' web-based management interface. Cisco attributes it to insufficient validation of user-supplied input to scripts. Exploitation requires remote authenticated administrative privileges, low attack complexity, and no user interaction. Successful exploitation allows arbitrary command execution with root privileges.
Likely exposure
Exposure is limited to organizations running the named Cisco Small Business RV router families with accessible web-based management. Risk rises sharply where administrative interfaces are reachable from untrusted networks or admin credentials are weak, reused, or compromised.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The vulnerability is still serious because it converts administrative web access into root-level operating system command execution on edge network devices.
Researcher notes
Evidence supports authenticated command injection with root impact, CVSS 7.2, and CWE-77. The bundle does not provide specific vulnerable firmware ranges, fixed versions, proof-of-concept status, or exploitation evidence, so those points should be verified in Cisco's advisory before closure.
Mitigation direction
- Review Cisco's advisory for affected releases and supported fixed firmware guidance.
- Update affected routers when Cisco identifies a fixed firmware path.
- Restrict web-based management access to trusted administration networks only.
- Audit and remove unnecessary router administrator accounts.
- Use strong, unique administrator credentials and centralized credential controls where available.
Validation and detection
- Inventory Cisco RV016, RV042, RV082, RV320, and RV325 routers.
- Compare deployed firmware and models against the Cisco advisory.
- Confirm management interfaces are not exposed to untrusted networks.
- Review administrator accounts for unexpected or stale access.
- Check router logs for unexpected admin sessions or configuration 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-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-2020-3274 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
- 20200617 Cisco Small Business RV Series Routers 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 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.