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CVE Record

CVE-2022-20887: 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 reports that several Small Business RV routers have management-interface flaws that could let a logged-in administrator run commands as root or crash the device. The attacker must already have valid administrator credentials. Cisco states that no software updates were released for these vulnerabilities, so exposure management matters.

Executive priority

Treat this as a moderate operational risk, not an unauthenticated internet-scale emergency. Prioritize finding affected routers, limiting management access, and replacing unsupported devices because the source bundle says Cisco did not release fixes.

Technical view

CVE-2022-20887 affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. Insufficient validation of user fields in incoming HTTP packets to the web-based management interface can allow authenticated remote command execution with root privileges or denial of service. CVSS v3.1 is 4.7 with high privileges required.

Likely exposure

Exposure is most likely where affected RV routers are still deployed and the web-based management interface is reachable by administrators or broader networks. Risk increases if administrator credentials are weak, reused, shared, or compromised.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires valid Administrator credentials and crafted HTTP traffic to the router management interface. Impact can include root-level command execution or unexpected device restart.

Researcher notes

The key constraint is privileges: PR:H. The flaw is still serious after admin compromise because successful exploitation may execute commands as root or cause DoS. The bundle identifies CWE-120 and insufficient user-field validation, but does not provide patch, workaround, or exploit-in-the-wild evidence.

Mitigation direction

  • Identify whether affected RV110W, RV130, RV130W, or RV215W routers remain in service.
  • Check Cisco advisory for current guidance and product lifecycle options.
  • Restrict web management access to trusted administrator networks only.
  • Tightly control, rotate, and audit router administrator credentials.
  • Plan replacement where no supported software update is available.

Validation and detection

  • Inventory router model and firmware against the affected Cisco RV models.
  • Confirm who can reach the web-based management interface over the network.
  • Review administrator account list for unused, shared, or weak accounts.
  • Check logs for unexpected restarts or suspicious administrator activity.
  • Verify Cisco has not published a later applicable update.
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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2022-20887 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-2022-20887Attack 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.