Security readout for executives and security teams
Plain-English summary
This issue affects several Cisco Small Business RV router models. An attacker who already has valid administrator credentials could send crafted management-interface traffic that may run commands as root or restart the router. Cisco states it has not released software updates for these vulnerabilities.
Executive priority
Treat this as a moderate operational risk for legacy small-business routers. It is not reported as actively exploited in the supplied sources, but the impact is high if administrator credentials are compromised and no Cisco software update is available.
Technical view
CVE-2022-20894 covers insufficient validation of user fields in incoming HTTP packets to the web-based management interface. The result can be authenticated remote command execution with root-level privileges or denial of service. CVSS 3.1 is 4.7, with high privileges required and no user interaction.
Likely exposure
Exposure is most relevant where RV110W, RV130, RV130W, or RV215W routers are still deployed and their web management interface is reachable by administrators over a network path an attacker could access.
Exploitation context
The source bundle does not show KEV listing or active exploitation. Exploitation requires valid Administrator credentials on the affected device, but successful exploitation could affect confidentiality, integrity, and availability through root command execution or unexpected restart.
Researcher notes
Evidence is strongest for affected products, required privileges, impact, CVSS, and lack of Cisco updates. The supplied sources do not establish exploit availability, observed exploitation, firmware-specific version ranges, or a vendor patch path.
Mitigation direction
- Check Cisco's advisory for current vendor guidance before making changes.
- Inventory affected RV110W, RV130, RV130W, and RV215W devices.
- Restrict access to the web-based management interface to trusted administrative paths.
- Review and rotate Administrator credentials where exposure is possible.
- Plan replacement or risk acceptance where no vendor update is available.
Validation and detection
- Confirm whether affected Cisco RV models exist in the environment.
- Identify where each router's web management interface is reachable.
- Verify Administrator account ownership and remove unnecessary admin credentials.
- Review device logs for unexpected restarts or suspicious admin activity.
- Document Cisco's no-update status in the vulnerability record.
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-2022-20894 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.
