Security readout for executives and security teams
Plain-English summary
Certain Cisco Small Business RV routers have management-interface flaws that can let a logged-in administrator execute code as root or crash the device. The key constraint is privilege: the attacker needs valid administrator credentials. Cisco’s referenced advisory says no software updates were released, so exposure management matters.
Executive priority
Treat as high priority where these routers remain in production. The vulnerability needs admin credentials, but successful compromise gives root-level control or can disrupt connectivity, and no Cisco software fix is identified in the provided sources.
Technical view
CVE-2021-1190 covers multiple input-validation flaws in the web-based management interface of RV110W, RV130, RV130W, and RV215W routers. Crafted HTTP requests by an authenticated remote administrator can trigger arbitrary code execution as root or device reload. CVSS is 7.2, high, with high privileges required.
Likely exposure
Exposure is limited to organizations still running the named Cisco Small Business RV router models, especially where administrative web management is reachable to remote users or reused administrator credentials exist.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. Exploitation requires valid administrator credentials and network access to the web management interface, but impact is full device compromise or denial of service.
Researcher notes
Evidence supports authenticated remote code execution and denial of service through crafted HTTP requests to the management interface. The provided data names CWE-121 and CVSS 7.2. No exploit-in-the-wild evidence or vendor patch is included.
Mitigation direction
- Check Cisco’s advisory and support guidance for current replacement or mitigation options.
- Do not assume patched firmware exists; the bundle says Cisco released no updates.
- Inventory the named RV router models and prioritize removal or replacement planning.
- Restrict management access to trusted administrative networks while assessing exposure.
- Review administrator credential hygiene for these devices.
Validation and detection
- Identify deployed RV110W, RV130, RV130W, and RV215W devices.
- Confirm whether the web-based management interface is remotely reachable.
- Verify who holds administrator credentials for affected routers.
- Check firmware and support status against Cisco’s advisory.
- Review logs for unexpected administrative access or device reloads.
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-2021-1190 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.