Security readout for executives and security teams
Plain-English summary
These Cisco small business routers have flaws in their web management interface. An attacker with valid Administrator credentials could run commands as root or force the router to restart. Cisco states it has not released software updates for these vulnerabilities, so exposure depends heavily on whether affected routers remain deployed and how tightly management access is controlled.
Executive priority
Treat this as a moderate-risk legacy perimeter device issue. The credential requirement lowers immediate urgency, but no vendor update means affected routers should be isolated, tightly administered, or replaced during normal risk reduction work.
Technical view
CVE-2022-20892 covers multiple authenticated remote command execution and denial-of-service vulnerabilities in Cisco RV110W, RV130, RV130W, and RV215W routers. The issue is insufficient validation of user fields in incoming HTTP packets, mapped to CWE-120. Exploitation requires Administrator credentials and access to the web-based management interface.
Likely exposure
Exposure is most likely in organizations still operating the listed Cisco Small Business RV routers, especially where the web management interface is reachable beyond a trusted administrative network.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation is network-accessible but requires valid Administrator credentials, reducing likelihood while keeping impact meaningful because successful command execution runs with root-level privileges.
Researcher notes
Do not assume unauthenticated exploitation. The public description requires valid Administrator credentials. Focus validation on product presence, management-plane reachability, admin account control, and operational indicators such as unexpected restarts.
Mitigation direction
- Check Cisco’s advisory for current vendor guidance and product status.
- Remove management interface exposure from untrusted networks.
- Restrict router administration to trusted networks and named administrators.
- Review and harden Administrator credentials and access procedures.
- Plan replacement if affected routers cannot be isolated acceptably.
Validation and detection
- Inventory Cisco RV110W, RV130, RV130W, and RV215W devices.
- Confirm whether web management is reachable from untrusted networks.
- Review Administrator accounts for unnecessary or shared access.
- Check device logs for unexpected restarts or suspicious admin activity.
- Verify Cisco has not provided a fixed software release for deployed models.
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-2022-20892 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.
