Security readout for executives and security teams
Plain-English summary
This flaw affects older Cisco Small Business routers. An attacker who already has administrator credentials could use the web management interface to run code as root or force the router to restart, disrupting connectivity. Cisco reported no software updates for these vulnerabilities.
Executive priority
Treat this as a high-priority legacy-router risk. There is no vendor software update in the provided advisory, and compromise could give root control or cause outages. Prioritize inventory, access restriction, credential control, and replacement planning.
Technical view
CVE-2021-1360 covers improper user-input validation in the web-based management interface of Cisco RV110W, RV130, RV130W, and RV215W routers. Authenticated remote administrators can send crafted HTTP requests that may trigger root-level arbitrary code execution or denial of service. CVSS v3.1 is 7.2 with high privileges required.
Likely exposure
Exposure is limited to organizations still using the named Cisco Small Business routers, especially where the management interface is reachable by administrators over a network. Attack requires valid administrator credentials, so credential compromise or shared admin access materially increases risk.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires authenticated administrator access and crafted HTTP requests to the management interface. The impact remains serious because successful exploitation can reach root-level code execution or device reload.
Researcher notes
Key constraints are AV:N, AC:L, PR:H, UI:N, and root-level impact after successful authenticated exploitation. Evidence supports affected product names, management-interface attack surface, crafted HTTP trigger, DoS reload, and no released updates. Public exploitation is not established by the provided bundle.
Mitigation direction
- Review the Cisco advisory for current guidance; Cisco reported no software updates for this issue.
- Inventory Cisco RV110W, RV130, RV130W, and RV215W routers.
- Prioritize replacement or retirement of affected devices where risk cannot be accepted.
- Restrict management-interface access to trusted administrative networks only.
- Rotate and tightly control administrator credentials for affected router interfaces.
Validation and detection
- Confirm whether any named Cisco RV routers remain deployed.
- Verify management interfaces are not broadly reachable from untrusted networks.
- Review administrative account access and credential storage practices.
- Check device logs for unexpected restarts or suspicious management activity.
- Document business dependency and replacement status for each affected router.
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
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CWE-121: Exact CWE lookup
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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-2021-1360 mapping review
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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.