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CVE Record

CVE-2022-20879: 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 issue affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. An attacker with valid Administrator credentials could abuse the web management interface to run commands as root or crash the device. Cisco states it has not released software updates for these vulnerabilities.

Executive priority

Treat this as a medium-priority remediation item with elevated replacement planning. The issue needs Administrator credentials, but successful abuse can give root control or disrupt connectivity, and Cisco has not provided a software fix in the cited advisory.

Technical view

CVE-2022-20879 covers insufficient validation of user fields in incoming HTTP packets to the routers' web-based management interface. Exploitation requires authenticated remote Administrator access and may allow arbitrary command execution with root privileges or denial of service. CVSS v3.1 is 4.7 with high privileges required.

Likely exposure

Exposure is likely limited to organizations still operating the named Cisco Small Business RV models, especially where the web management interface is reachable beyond tightly controlled administrative networks. The source bundle does not identify specific vulnerable firmware versions beyond the affected product family.

Exploitation context

The provided sources do not support active exploitation, and KEV status is false. Exploitation requires valid Administrator credentials, which lowers opportunistic risk but raises concern if credentials are reused, phished, shared, or exposed.

Researcher notes

Do not assume unauthenticated exploitation. The key validation questions are model presence, management-plane reachability, administrator credential exposure, and whether compensating controls exist. Evidence is incomplete on exact firmware versions, workaround availability, and real-world exploitation.

Mitigation direction

  • Identify and prioritize affected RV110W, RV130, RV130W, and RV215W routers.
  • Restrict web management access to trusted administrative networks only.
  • Review and rotate Administrator credentials on affected devices.
  • Check Cisco guidance for migration, workaround, or replacement direction.
  • Plan replacement where no vendor update is available.

Validation and detection

  • Inventory router models and confirm whether listed Cisco RV devices remain deployed.
  • Verify web management is not exposed to untrusted networks.
  • Review admin account list, credential age, and access paths.
  • Check device logs for unexpected restarts or suspicious admin sessions.
  • Track Cisco advisory updates for any changed remediation guidance.
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

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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-2022-20879 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-2022-20879Attack 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.