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CVE Record

CVE-2022-20902: 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

Cisco lists multiple flaws in older Small Business RV routers that could let a logged-in administrator trigger root-level command execution or unexpected device restarts through the web management interface. Cisco has not released software updates for these vulnerabilities, so business risk depends on whether these routers remain deployed and how tightly management access is controlled.

Executive priority

Treat this as a replacement and exposure-reduction priority, not an emergency patch cycle. The vulnerability is authenticated and medium severity, but affected routers can be fully controlled or disrupted if administrator access is compromised.

Technical view

CVE-2022-20902 affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. The issue is insufficient validation of user fields in incoming HTTP packets to the web-based management interface. Exploitation requires valid Administrator credentials and network access to that interface. Impact includes arbitrary commands with root privileges or denial of service via unexpected restart.

Likely exposure

Exposure is most likely where affected RV-series routers are still in service and their web management interface is reachable by administrators over broad networks or the internet. The source bundle does not identify specific fixed firmware versions or patched releases.

Exploitation context

The provided sources do not show known active exploitation, and the CVE is not listed as KEV. Exploitation is constrained by the need for valid Administrator credentials, but successful exploitation can run commands as root or disrupt availability.

Researcher notes

The reported weakness maps to CWE-120 and CVSS 3.1 score 4.7, with AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L. Sources name no Cisco software update. Do not assume unauthenticated exploitation or public exploitation without additional evidence.

Mitigation direction

  • Check Cisco’s advisory for current guidance and product status.
  • Identify and replace affected devices where no vendor fix is available.
  • Restrict web management access to trusted administration networks only.
  • Remove any internet exposure of the management interface.
  • Review and rotate Administrator credentials on affected devices.
  • Monitor for unexpected router restarts and suspicious admin activity.

Validation and detection

  • Inventory Cisco RV110W, RV130, RV130W, and RV215W devices.
  • Confirm whether any affected devices remain in production.
  • Verify web management is not reachable from untrusted networks.
  • Review administrator account ownership and credential hygiene.
  • Check logs or monitoring for unexplained restarts.
  • Document compensating controls for devices awaiting replacement.
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-120: 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.

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cve · low confidence lookup

CVE-2022-20902 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-2022-20902Attack 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.