Security readout for executives and security teams
Plain-English summary
This flaw affects several Cisco Small Business RV routers. An attacker with valid Administrator credentials could use the web management interface to run commands as root or crash the device. Cisco did not release software updates for this issue, so owners should treat affected devices as operational risk and review vendor guidance.
Executive priority
Handle as a moderate infrastructure risk. The flaw requires admin credentials, but successful exploitation gives root-level control or service disruption, and no Cisco software update is identified in the provided sources.
Technical view
CVE-2022-20888 covers insufficient validation of user fields in incoming HTTP packets to the web-based management interface. Authenticated remote exploitation requires Administrator credentials and can lead to root-level command execution or unexpected restart causing DoS. CVSS v3.1 is 4.7 with high privileges required.
Likely exposure
Exposure is limited to Cisco Small Business RV110W, RV130, RV130W, and RV215W routers where the web management interface is reachable by someone with Administrator credentials. The bundle does not provide affected firmware ranges or CPEs.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not marked KEV. Exploitation requires authenticated Administrator access, which lowers broad internet risk but raises concern if credentials are shared, stolen, or reused.
Researcher notes
Key constraints are important: authenticated Administrator access is required, attack surface is the web management interface, and Cisco reported no software updates. The source bundle lacks affected firmware granularity, exploit prevalence, and detailed mitigations.
Mitigation direction
- Check Cisco’s advisory for current vendor guidance and support status.
- Inventory RV110W, RV130, RV130W, and RV215W devices in all networks.
- Restrict web management access to trusted administrative networks only.
- Review and rotate Administrator credentials for affected devices.
- Plan risk acceptance, isolation, or replacement where no vendor update exists.
Validation and detection
- Confirm device models against Cisco’s affected RV router list.
- Verify whether web-based management is exposed beyond trusted administrators.
- Review router administrator accounts for shared, stale, or unnecessary access.
- Check monitoring for unexpected restarts or management-interface anomalies.
- Document firmware and support status for each affected router.
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-2022-20888 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.
