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CVE Record

CVE-2021-1200: Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. The vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device. Cisco has not released software updates that address these vulnerabilities.

HighCVSS 7.2Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

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.
Prepared
Confidence
high
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-121: Exact CWE lookup

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description · low confidence lookup

Execution 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.

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cve · low confidence lookup

CVE-2021-1200 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
7.2CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.2High
CVSS 3.1 vector shape for CVE-2021-1200Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
CiscoCisco Small Business RV Series Router Firmwaren/aListed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-121 · source CWE mapping

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.