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CVE Record

CVE-2021-1179: 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 affects older Cisco Small Business RV routers. If an attacker already has administrator credentials, they may be able to run code as root or crash the device through the web management interface. Cisco did not release software updates for the issue in the provided advisory.

Executive priority

Treat as high priority where affected routers remain deployed, especially at branch, small office, or remote-access edges. The absence of Cisco software updates shifts the decision toward exposure reduction, credential control, and planned replacement.

Technical view

CVE-2021-1179 covers improper validation of user input in the web-based management interface of RV110W, RV130, RV130W, and RV215W routers. Crafted HTTP requests by an authenticated remote administrator can trigger arbitrary code execution as root or device reload. CVSS v3.1 is 7.2.

Likely exposure

Exposure is limited to Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. Risk is highest where the management interface is reachable from broad networks or the internet, and where administrator credentials may be shared, weak, reused, or compromised.

Exploitation context

The source bundle does not show CISA KEV listing or other cited evidence of active exploitation. Exploitation requires valid administrator credentials, but successful exploitation can provide root-level execution or denial of service, making credential compromise especially serious.

Researcher notes

The advisory attributes the issue to improper validation in the management interface and lists CWE-121. The bundle gives no exploit proof, patch, workaround details, or affected firmware versions beyond the product family, so validation should stay focused on model presence, interface reachability, and admin credential risk.

Mitigation direction

  • Check Cisco advisory for any updated vendor guidance.
  • Identify and prioritize replacement of affected routers without fixes.
  • Restrict management interface access to trusted admin networks only.
  • Review and harden administrator credential practices.
  • Monitor for unexpected router reloads or suspicious admin activity.

Validation and detection

  • Inventory environments for RV110W, RV130, RV130W, and RV215W routers.
  • Confirm firmware and model against Cisco advisory scope.
  • Verify whether web management is reachable from untrusted networks.
  • Review admin account ownership and recent credential changes.
  • Check logs for unexpected management requests or device reloads.
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

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.

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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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-1179 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-2021-1179Attack 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.