Security readout for executives and security teams
Plain-English summary
This flaw affects several Cisco Small Business RV routers. An attacker with valid administrator credentials could use the web management interface to run code as root or crash the device. Cisco had not released software updates in the supplied advisory.
Executive priority
Treat this as high priority for affected legacy Cisco small-business routers. The vulnerability needs admin credentials, but successful exploitation can mean root-level control or outage, and the supplied Cisco advisory states no software update was released.
Technical view
CVE-2021-1200 is an authenticated network attack against the web-based management interface caused by improper validation of user input. Crafted HTTP requests from an administrator account can lead to arbitrary code execution as root or device reload. CVSS v3.1 is 7.2, high severity.
Likely exposure
Exposure is limited to Cisco RV110W, RV130, RV130W, and RV215W routers with reachable web management interfaces. The attacker needs valid administrator credentials, but compromise of those credentials would create full device control risk.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. Exploitation requires authenticated administrator access and crafted management-interface requests. The business risk is highest where these routers are internet-reachable, shared-administered, or difficult to replace.
Researcher notes
Focus validation on model identification, management-interface exposure, and administrator credential risk. The CVSS vector indicates network access, low complexity, high privileges required, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact.
Mitigation direction
- Check Cisco advisory and support channels for any current vendor guidance.
- Identify affected router models and prioritize replacement or isolation planning.
- Restrict management-interface access to trusted administrative networks where feasible.
- Review and rotate administrator credentials for affected devices.
- Monitor affected routers for unexpected reloads or configuration changes.
Validation and detection
- Inventory Cisco RV110W, RV130, RV130W, and RV215W devices.
- Confirm whether web management interfaces are reachable from untrusted networks.
- Review administrator account lists and recent login activity.
- Check device logs for unexpected reloads or management changes.
- Document compensating controls because no Cisco update is cited.
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-121: 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-2021-1200 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20210113 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service 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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
