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CVE Record

CVE-2022-20873: 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 affects older Cisco Small Business RV routers. An attacker who already has valid Administrator credentials could abuse the web management interface to run commands as root or crash the device. Cisco had not released software updates in the supplied advisory, so exposed or still-deployed devices need attention despite the medium CVSS score.

Executive priority

Treat this as a medium-likelihood but high-impact legacy-router issue. The business decision is whether affected routers can be isolated and tightly administered, or should be replaced because no vendor software update is identified in the supplied sources.

Technical view

The issue is insufficient validation of user fields in incoming HTTP packets to the web-based management interface. A crafted authenticated request can trigger arbitrary command execution with root privileges or unexpected restart causing DoS. Exploitation requires network access to the management interface and valid Administrator credentials.

Likely exposure

Exposure is limited to Cisco Small Business RV110W, RV130, RV130W, and RV215W routers with reachable web-based management. Risk rises if management is internet-accessible, credentials are shared, or administrator accounts are weakly controlled.

Exploitation context

The supplied sources do not show known active exploitation or KEV listing. The main practical barrier is the need for valid Administrator credentials. If those credentials are compromised, impact can include root-level command execution or router restart.

Researcher notes

Do not assume unauthenticated exploitation. The vulnerability requires valid Administrator credentials and crafted HTTP input to the management interface. Evidence supports root command execution and DoS impact, but not public exploitation or a Cisco patch in the supplied bundle.

Mitigation direction

  • Check Cisco advisory for current guidance; supplied sources list no software update.
  • Inventory and prioritize affected RV110W, RV130, RV130W, and RV215W devices.
  • Restrict web management access to trusted administrative networks only.
  • Review Administrator accounts and remove weak, shared, or unnecessary credentials.
  • Consider replacing affected devices where residual risk is unacceptable.

Validation and detection

  • Confirm deployed router models and firmware families against the affected Cisco RV list.
  • Verify whether the web-based management interface is reachable from untrusted networks.
  • Review administrator account inventory and recent management logins.
  • Confirm change records document compensating controls or replacement plans.
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-2022-20873 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-2022-20873Attack 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.