Security readout for executives and security teams
Plain-English summary
CVE-2022-20893 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 restart the router. Cisco states it has not released software updates for these vulnerabilities.
Executive priority
Prioritize asset discovery and exposure reduction. This is not a confirmed active-exploitation emergency from the supplied sources, but affected routers can become high-impact if administrator credentials are compromised and no vendor patch is available.
Technical view
The issue is insufficient validation of user fields in incoming HTTP packets to the web-based management interface. Authenticated remote exploitation with Administrator privileges may lead to root-level command execution or denial of service. CVSS v3.1 is 4.7 with high privileges required and low attack complexity.
Likely exposure
Exposure is most likely where affected Cisco Small Business RV routers are still deployed and their web management interface is reachable by administrators over a network. Risk increases if admin credentials are weak, reused, shared, or compromised.
Exploitation context
The supplied sources do not show active exploitation, and the CVE is not listed as KEV. Exploitation requires valid Administrator credentials, but successful exploitation could give root-level control or disrupt router availability.
Researcher notes
Cisco attributes the flaws to input validation failures in HTTP packet user fields. The source bundle does not provide patch versions, workaround details, or exploit evidence. Treat public management exposure and credential hygiene as the main validation focus.
Mitigation direction
- Identify and inventory affected RV110W, RV130, RV130W, and RV215W routers.
- Check Cisco’s advisory for current vendor guidance and any operational recommendations.
- Restrict web management access to trusted administrative networks only.
- Review, rotate, and tightly control Administrator credentials on affected devices.
- Plan compensating controls or replacement where no fixed firmware is available.
Validation and detection
- Confirm device model and firmware against Cisco’s affected product list.
- Verify whether web-based management is reachable from untrusted networks.
- Review administrator account inventory for shared, stale, or weak credentials.
- Check logs for unexpected management access or unexplained router restarts.
- Document whether Cisco has provided no software update for the deployed device.
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-2022-20893 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.
