Security readout for executives and security teams
Plain-English summary
This flaw affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. An attacker who already has Administrator credentials could abuse the web management interface to run root-level commands or force a restart. Cisco did not release software updates for this issue in the supplied advisory.
Executive priority
Treat as a moderate infrastructure risk. It is not shown as actively exploited and requires admin credentials, but successful abuse can give root-level control or disrupt connectivity. Prioritize devices with exposed management interfaces or weak shared administrator access.
Technical view
CVE-2022-20878 is an authenticated remote command execution and denial-of-service issue in affected Cisco Small Business RV routers. The cause is insufficient validation of user fields in incoming HTTP packets to the web-based management interface. Exploitation requires valid Administrator credentials and may result in root-level command execution or unexpected device restart.
Likely exposure
Exposure is most relevant where affected RV110W, RV130, RV130W, or RV215W routers remain deployed and their web management interface is reachable by administrators or broader networks. Risk is lower than unauthenticated RCE because valid Administrator credentials are required, but impact is meaningful on compromised admin accounts.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. Exploitation requires authenticated Administrator access and a crafted request to the web-based management interface. No public exploit status is established from the provided bundle.
Researcher notes
Evidence is limited to the CVE record and Cisco advisory metadata in the bundle. The CVSS score is 4.7 with PR:H, AV:N, AC:L, UI:N, and low confidentiality, integrity, and availability impact. Cisco is cited as not releasing software updates for these vulnerabilities.
Mitigation direction
- Check Cisco advisory for current vendor guidance and product status.
- Plan replacement or isolation where affected routers remain in use.
- Restrict management interface access to trusted administrative networks only.
- Review and harden Administrator credentials for affected devices.
- Monitor for unexpected router restarts or suspicious admin activity.
Validation and detection
- Inventory sites for RV110W, RV130, RV130W, and RV215W routers.
- Confirm whether web-based management is reachable from untrusted networks.
- Review configured Administrator accounts and recent credential changes.
- Check device logs for unexpected restarts or management activity.
- Document compensating controls because no Cisco software update is listed.
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-2022-20878 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.
