Security readout for executives and security teams
Plain-English summary
CVE-2021-1182 affects Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. An attacker with valid administrator credentials could abuse the management web interface to run code as root or crash the device. Cisco reported no software update for these vulnerabilities in the provided advisory data.
Executive priority
Treat this as a high-priority edge-device risk where affected routers remain in service. The absence of a cited Cisco software update increases operational urgency to confirm exposure and plan replacement or containment, especially for internet-facing or poorly segmented management interfaces.
Technical view
The issue is improper validation of user-supplied input in the web-based management interface. Crafted HTTP requests from an authenticated remote administrator can trigger arbitrary code execution on the underlying operating system as root or force device reload, causing denial of service. CVSS v3.1 is 7.2 with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to the named Cisco Small Business RV router models where the management interface is reachable and an attacker has administrator credentials. Devices used at branch offices, small offices, or unmanaged edge networks are the most relevant inventory targets.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires valid administrator credentials, but successful exploitation could provide root-level device control or disrupt routing service through reloads.
Researcher notes
The vulnerability record identifies CWE-121 and authenticated network attack conditions. Available evidence is enough to scope affected models and impact, but incomplete for precise fixed versions or vendor-approved workarounds because the supplied data says Cisco did not release updates.
Mitigation direction
- Check Cisco advisory and support channels for current vendor guidance.
- Identify and prioritize affected routers for retirement or replacement planning.
- Restrict management interface access to trusted administrative networks.
- Review administrator credential hygiene and remove unused admin accounts.
- Monitor affected routers for unexpected reloads or management activity.
Validation and detection
- Inventory Cisco RV110W, RV130, RV130W, and RV215W routers.
- Confirm firmware and model against Cisco advisory scope.
- Verify whether web management is reachable from untrusted networks.
- Review admin account list for unknown or unnecessary users.
- Check logs for unexpected reloads or suspicious administrative requests.
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-2021-1182 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.