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CVE Record

CVE-2022-20912: Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers 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 on an affected device or cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. These vulnerabilities are due to insufficient validation of user fields within incoming HTTP packets. An attacker could exploit these vulnerabilities by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on an affected device with root-level privileges or to cause the device to restart unexpectedly, resulting in a 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.

MediumCVSS 4.7Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

These Cisco small-business routers have flaws in the web management interface. An attacker who already has valid administrator credentials could run commands as root or crash the device. Cisco states it has not released software updates for these vulnerabilities, so exposed or still-deployed devices need compensating controls or replacement planning.

Executive priority

Treat this as a moderate-priority legacy edge-device risk. It is not reported as actively exploited in the provided sources, but the lack of vendor updates makes long-term operation risky, especially for internet-facing or weakly managed devices.

Technical view

CVE-2022-20912 affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. Insufficient validation of user fields in incoming HTTP packets can allow authenticated remote command execution or denial of service through the web-based management interface. Exploitation requires valid Administrator credentials. CVSS v3.1 is 4.7.

Likely exposure

Exposure is most likely where these legacy Cisco Small Business routers remain deployed and their web-based management interface is reachable by administrators or broader networks. Risk increases if administrator credentials are weak, reused, or exposed.

Exploitation context

The source bundle does not show CISA KEV listing or other evidence of active exploitation. The issue is still serious because successful exploitation gives root-level command execution or causes device restarts, but it requires valid Administrator credentials.

Researcher notes

Do not assume unauthenticated exploitability. The advisory describes authenticated remote exploitation requiring valid Administrator credentials. Focus validation on affected model presence, management-plane reachability, credential exposure, and replacement or isolation decisions. Evidence for fixes is limited to Cisco stating no software updates were released.

Mitigation direction

  • Identify any RV110W, RV130, RV130W, or RV215W routers in use.
  • Restrict web management access to trusted administrative networks only.
  • Review and rotate Administrator credentials for affected devices.
  • Replace or retire affected routers where feasible, since Cisco lists no software updates.
  • Check Cisco advisory guidance for any updated recommendations.

Validation and detection

  • Confirm device models against the affected Cisco router list.
  • Verify the web-based management interface is not internet-exposed.
  • Review administrator account inventory and credential hygiene.
  • Check logs or monitoring for unexpected restarts or suspicious admin access.
  • Document compensating controls or replacement status for each affected device.
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-120: 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-2022-20912 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
Medium
CVSS
4.7 (3.1)
Known Exploited
No
Published

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

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
4.7CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L1.23.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.7Medium
CVSS 3.1 vector shape for CVE-2022-20912Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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-120 · source CWE mapping

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.