Security readout for executives and security teams
Plain-English summary
This issue affects 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 crash the device. Cisco states it has not released software updates for these vulnerabilities.
Executive priority
Treat this as a medium-priority remediation item with elevated replacement planning. The issue needs Administrator credentials, but successful abuse can give root control or disrupt connectivity, and Cisco has not provided a software fix in the cited advisory.
Technical view
CVE-2022-20879 covers insufficient validation of user fields in incoming HTTP packets to the routers' web-based management interface. Exploitation requires authenticated remote Administrator access and may allow arbitrary command execution with root privileges or denial of service. CVSS v3.1 is 4.7 with high privileges required.
Likely exposure
Exposure is likely limited to organizations still operating the named Cisco Small Business RV models, especially where the web management interface is reachable beyond tightly controlled administrative networks. The source bundle does not identify specific vulnerable firmware versions beyond the affected product family.
Exploitation context
The provided sources do not support active exploitation, and KEV status is false. Exploitation requires valid Administrator credentials, which lowers opportunistic risk but raises concern if credentials are reused, phished, shared, or exposed.
Researcher notes
Do not assume unauthenticated exploitation. The key validation questions are model presence, management-plane reachability, administrator credential exposure, and whether compensating controls exist. Evidence is incomplete on exact firmware versions, workaround availability, and real-world exploitation.
Mitigation direction
- Identify and prioritize affected RV110W, RV130, RV130W, and RV215W routers.
- Restrict web management access to trusted administrative networks only.
- Review and rotate Administrator credentials on affected devices.
- Check Cisco guidance for migration, workaround, or replacement direction.
- Plan replacement where no vendor update is available.
Validation and detection
- Inventory router models and confirm whether listed Cisco RV devices remain deployed.
- Verify web management is not exposed to untrusted networks.
- Review admin account list, credential age, and access paths.
- Check device logs for unexpected restarts or suspicious admin sessions.
- Track Cisco advisory updates for any changed 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-2022-20879 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.
