Security readout for executives and security teams
Plain-English summary
This flaw lets a logged-in administrator account abuse the router web management interface to run commands as root or crash the device. The main business risk is compromise or outage of small-office edge routers where admin credentials are exposed, shared, or stolen. Cisco did not name a fixed software update in the provided advisory.
Executive priority
Treat this as a moderate-priority edge-device risk. It is not unauthenticated, but affected routers have no named software update in the provided source, so organizations should reduce management exposure and plan replacement where these devices remain in service.
Technical view
CVE-2022-20904 affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. Insufficient validation of user fields in incoming HTTP packets can allow authenticated remote command execution with root privileges or denial of service through unexpected restart. The CVSS v3.1 score is 4.7 because exploitation requires high privileges.
Likely exposure
Exposure is limited to environments still operating the listed Cisco Small Business RV routers, especially where the web-based management interface is reachable by administrators over untrusted networks or where Administrator credentials are weak, reused, or broadly shared.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires valid Administrator credentials on the affected device and access to the web-based management interface. Successful exploitation can affect confidentiality, integrity, and availability at the router level.
Researcher notes
The source evidence is specific to authenticated requests against the web management interface. Do not assume unauthenticated exploitation, broader RV-series impact, or a public exploit from this bundle. Root-level command execution is possible after successful authenticated exploitation.
Mitigation direction
- Check Cisco advisory for current guidance; no fixed software update is named in the source.
- Inventory and prioritize replacement planning for affected RV110W, RV130, RV130W, and RV215W routers.
- Restrict web management interface access to trusted administrative networks only.
- Review and rotate Administrator credentials, especially shared or reused passwords.
- Disable unnecessary remote management paths where operationally feasible.
Validation and detection
- Identify deployed Cisco Small Business RV110W, RV130, RV130W, and RV215W routers.
- Confirm whether each device exposes its web-based management interface remotely.
- Review administrator account access, password hygiene, and recent credential changes.
- Check device logs for unexpected restarts or suspicious administrative web requests.
- Verify whether Cisco has published newer guidance since the cited advisory.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-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.
Open ATT&CK lookupExecution 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 lookupCVE-2022-20904 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- 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
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L1.23.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.7MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- 20220720 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command Execution and Denial of Service VulnerabilitiesCVE reference · vendor-advisory, x_refsource_CISCO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
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.
