Security readout for executives and security teams
Plain-English summary
This issue affects older Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. An attacker with valid administrator credentials could abuse the web management interface to run commands as root or force the router to restart. Cisco has not released software updates for this CVE in the provided sources.
Executive priority
Treat this as a moderate operational risk. The attacker needs admin credentials, but successful exploitation could give root-level control of edge network equipment. If these routers remain in use, prioritize access restriction, credential hygiene, and replacement planning because no Cisco update is named in the sources.
Technical view
The vulnerabilities are in insufficient validation of user fields in HTTP packets sent to the routers' web-based management interface. Exploitation requires network access to that interface and valid Administrator credentials. Successful exploitation can enable root-level command execution or denial of service through unexpected device restart. CVSS 3.1 score is 4.7 with high privileges required.
Likely exposure
Exposure is most likely in organizations still operating the listed Cisco Small Business RV router models, especially where web management is reachable beyond tightly controlled admin networks. Risk increases if administrator credentials are shared, weak, reused, or potentially compromised.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not marked as KEV. Exploitation is remote but requires valid Administrator credentials. The public description only says a crafted request to the web management interface can trigger command execution or denial of service.
Researcher notes
Do not assume unauthenticated exposure or public exploitation from the provided evidence. Validation should focus on affected model presence, management-plane reachability, administrator credential control, and signs of DoS or configuration tampering. Cisco's no-update statement is central to remediation planning.
Mitigation direction
- Review Cisco's advisory for current vendor guidance before taking operational action.
- Restrict web management access to trusted administrative networks or VPN-only paths.
- Audit and rotate router Administrator credentials, especially shared or reused passwords.
- Plan replacement or retirement where no supported software update is available.
- Monitor affected routers for unexpected restarts or unauthorized configuration changes.
Validation and detection
- Inventory environments for RV110W, RV130, RV130W, and RV215W routers.
- Confirm whether each router's web management interface is network-reachable.
- Review administrator account lists for stale, shared, or unnecessary accounts.
- Check logs or monitoring for unexplained router restarts.
- Verify affected devices are tracked in vulnerability management exceptions or remediation plans.
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-2022-20881 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.