Security readout for executives and security teams
Plain-English summary
This affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. An attacker with valid administrator credentials could abuse the web management interface to run code as root or crash the device. Cisco has not released software updates for the issue in the provided sources.
Executive priority
Treat this as a high-priority legacy network-edge risk where these routers remain deployed. The main business concern is full device compromise or outage after administrator credential abuse, with no software fix identified in the provided Cisco information.
Technical view
The issue is improper validation of user input in the web-based management interface. Crafted HTTP requests from an authenticated remote administrator can trigger arbitrary code execution as root or device reload, causing denial of service. CVSS 3.1 is 7.2, with network attack vector and high privileges required.
Likely exposure
Exposure is limited to affected Cisco Small Business RV models where an attacker can reach the management interface and has valid administrator credentials. Internet-exposed or broadly reachable management interfaces increase business risk, but the source bundle does not confirm exploitation in the wild.
Exploitation context
The provided CVE data says exploitation requires valid administrator credentials and crafted HTTP requests to the management interface. CISA KEV status is false in the bundle, and no cited source states active exploitation.
Researcher notes
Evidence is limited to the CVE record and Cisco advisory metadata in the source bundle. Do not assume unauthenticated exploitation, active exploitation, or available patches. Focus validation on model presence, management-plane reachability, administrator credential hygiene, and operational signs of reload or compromise.
Mitigation direction
- Review Cisco advisory and current vendor guidance for affected models.
- Inventory RV110W, RV130, RV130W, and RV215W devices in use.
- Restrict web management access to trusted administrator networks only.
- Tightly control, rotate, and audit administrator credentials.
- Plan replacement or removal where no vendor software update exists.
Validation and detection
- Confirm whether affected Cisco RV models are present in asset inventory.
- Verify management interfaces are not exposed to untrusted networks.
- Review administrator accounts for unnecessary, shared, or stale credentials.
- Check logs or monitoring for unexpected reloads or suspicious admin activity.
- Document firmware and support status against Cisco advisory information.
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-2021-1210 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.