Analyst readout for executives and security teams
Plain-English summary
This vulnerability affects the management interfaces of several Cisco small-business VPN routers. A logged-in remote attacker could send crafted HTTP requests and run code on the router with high privileges. For a business, that can mean loss of network device control, traffic exposure, or service disruption.
Executive priority
Treat this as high priority for any deployed affected router, especially if management access is reachable beyond a small admin network. The issue could let an authenticated attacker take high-privilege control of edge networking equipment.
Technical view
CVE-2020-3146 covers multiple command execution issues in Cisco RV110W, RV130, RV130W, and RV215W router web management interfaces. The flaw is improper validation of user-supplied data. CVSS 3.0 is 8.8: network exploitable, low complexity, low privileges required, no user interaction, high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where affected Cisco RV-series routers are still deployed and their web management interface is reachable by authenticated users over the network. Internet-exposed or broadly reachable management interfaces increase operational risk.
Exploitation context
The provided sources describe authenticated remote exploitation through malicious HTTP requests. The bundle does not show CISA KEV listing or other cited evidence of active exploitation, so active exploitation should not be assumed from this data alone.
Researcher notes
Evidence is limited to the CVE record and Cisco advisory metadata in the bundle. The structured affected entry explicitly names RV130W firmware, while the title and description name four router models. Confirm exact affected firmware and remediation details in Cisco’s advisory before closure.
Mitigation direction
- Identify Cisco RV110W, RV130, RV130W, and RV215W devices in use.
- Review Cisco’s advisory for applicable fixed releases or vendor workarounds.
- Restrict management interface access to trusted administrative networks only.
- Remove unnecessary remote management exposure where business operations allow.
- Audit administrator accounts and remove unused or shared credentials.
Validation and detection
- Confirm model and firmware version against Cisco’s advisory.
- Check whether the web management interface is reachable from untrusted networks.
- Review router logs for unexpected authenticated management activity.
- Verify administrative accounts are known, necessary, and individually assigned.
- Track remediation status in the vulnerability management system.
Public sources used
Based on public source material and reviewed before publication.
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-119: 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 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-2020-3146 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
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/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:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200715 Cisco RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution Multiple 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 Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.