Security readout for executives and security teams
Plain-English summary
CVE-2021-1192 affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. An attacker with valid administrator credentials could abuse the web management interface to run code as root or force a device reload. Cisco’s provided advisory states no software updates were released for these vulnerabilities.
Executive priority
Treat this as high priority for legacy edge infrastructure. The flaw requires admin credentials, but compromise could give root control of routing devices or cause outages, and the provided Cisco source says no software update was released.
Technical view
The issue is improper validation of user-supplied input in the web-based management interface, mapped to CWE-121. A remote authenticated administrator can send crafted HTTP requests, potentially achieving root-level arbitrary code execution or denial of service. CVSS 3.1 is 7.2: network attack vector, low complexity, high privileges required, no user interaction.
Likely exposure
Exposure is most likely where affected Cisco Small Business RV routers remain deployed and their management interfaces are reachable by administrators over a network. Risk rises if admin credentials are weak, shared, reused, or compromised.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires valid administrator credentials, but successful exploitation could provide root-level control or disrupt routing availability.
Researcher notes
Evidence is limited to the CVE record and Cisco advisory metadata in the provided bundle. Do not assume unauthenticated exploitation, public exploit availability, or a patch. Focus validation on model presence, management-plane exposure, and administrator credential risk.
Mitigation direction
- Check Cisco’s advisory and current vendor guidance before relying on any fix status.
- Inventory RV110W, RV130, RV130W, and RV215W devices still in use.
- Restrict management interface access to trusted administrative networks only.
- Audit, rotate, and limit administrator credentials for affected routers.
- Plan replacement or isolation where no vendor update is available.
Validation and detection
- Confirm whether affected router models exist in production or remote offices.
- Verify management interfaces are not reachable from untrusted networks.
- Review administrator account lists for unnecessary or shared accounts.
- Check logs for unexpected reloads or suspicious management activity.
- Document compensating controls for any device that cannot be replaced.
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-121: 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-2021-1192 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
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20210113 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface 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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
