Security readout for executives and security teams
Plain-English summary
This flaw affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. An attacker with valid Administrator credentials could use 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 moderate operational risk. It is not reported as actively exploited in the provided sources, but the impact includes root command execution and device outage, and Cisco has not provided a software fix.
Technical view
The vulnerabilities are in the web-based management interface and stem from insufficient validation of user fields in incoming HTTP packets, mapped to CWE-120. Exploitation requires network access and high privileges. Successful exploitation may provide root-level command execution or trigger an unexpected restart causing denial of service.
Likely exposure
Exposure is most likely where affected RV-series routers remain deployed and their web management interface is reachable by administrators, especially from broader networks. The source bundle does not identify affected firmware versions beyond the listed product family.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. Exploitation requires valid Administrator credentials, which lowers opportunistic risk but increases concern if credentials are reused, stolen, or shared.
Researcher notes
Focus validation on management-plane exposure and Administrator credential control. Do not assume unauthenticated exploitation from the cited sources. The published CVSS is 4.7 with PR:H, UI:N, and low confidentiality, integrity, and availability impacts.
Mitigation direction
- Inventory RV110W, RV130, RV130W, and RV215W devices and identify reachable management interfaces.
- Restrict web management access to trusted administrative networks only.
- Review and rotate Administrator credentials; remove shared or stale accounts.
- Check Cisco advisory for current replacement or operational guidance before accepting risk.
- Plan device replacement where no fixed Cisco software is available.
Validation and detection
- Confirm model and firmware from asset inventory or device administration records.
- Verify whether web-based management is reachable from untrusted networks.
- Review administrator account lists for stale, shared, or unnecessary users.
- Check logs or monitoring for unexpected restarts or administrative management activity.
- Track Cisco advisory updates for any change in remediation guidance.
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-2022-20899 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.
