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CVE Record

CVE-2022-20888: 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

This flaw affects several Cisco Small Business RV routers. An attacker with valid Administrator credentials could use the web management interface to run commands as root or crash the device. Cisco did not release software updates for this issue, so owners should treat affected devices as operational risk and review vendor guidance.

Executive priority

Handle as a moderate infrastructure risk. The flaw requires admin credentials, but successful exploitation gives root-level control or service disruption, and no Cisco software update is identified in the provided sources.

Technical view

CVE-2022-20888 covers insufficient validation of user fields in incoming HTTP packets to the web-based management interface. Authenticated remote exploitation requires Administrator credentials and can lead to root-level command execution or unexpected restart causing DoS. CVSS v3.1 is 4.7 with high privileges required.

Likely exposure

Exposure is limited to Cisco Small Business RV110W, RV130, RV130W, and RV215W routers where the web management interface is reachable by someone with Administrator credentials. The bundle does not provide affected firmware ranges or CPEs.

Exploitation context

The provided sources do not show active exploitation, and the CVE is not marked KEV. Exploitation requires authenticated Administrator access, which lowers broad internet risk but raises concern if credentials are shared, stolen, or reused.

Researcher notes

Key constraints are important: authenticated Administrator access is required, attack surface is the web management interface, and Cisco reported no software updates. The source bundle lacks affected firmware granularity, exploit prevalence, and detailed mitigations.

Mitigation direction

  • Check Cisco’s advisory for current vendor guidance and support status.
  • Inventory RV110W, RV130, RV130W, and RV215W devices in all networks.
  • Restrict web management access to trusted administrative networks only.
  • Review and rotate Administrator credentials for affected devices.
  • Plan risk acceptance, isolation, or replacement where no vendor update exists.

Validation and detection

  • Confirm device models against Cisco’s affected RV router list.
  • Verify whether web-based management is exposed beyond trusted administrators.
  • Review router administrator accounts for shared, stale, or unnecessary access.
  • Check monitoring for unexpected restarts or management-interface anomalies.
  • Document firmware and support status for each affected router.
Prepared
Confidence
medium
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-2022-20888 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-2022-20888Attack 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.