Security readout for executives and security teams
Plain-English summary
This Cisco router issue lets someone with administrator credentials abuse the web management interface to run code as root or force a reboot. The main business risk is compromise or outage of small-office network edge devices. Cisco reported no software updates for these vulnerabilities.
Executive priority
Treat as high priority for environments still using these routers, especially at branch offices or small sites. The issue requires administrator credentials, but device compromise can affect network availability and trust. Because Cisco reported no software updates, exposure reduction and replacement planning matter.
Technical view
CVE-2021-1183 covers multiple improper input validation flaws in the web-based management interface of Cisco RV110W, RV130, RV130W, and RV215W routers. An authenticated remote administrator can send crafted HTTP requests, causing root-level code execution or denial of service. CVSS v3.1 is 7.2 high with PR:H.
Likely exposure
Exposure is limited to affected Cisco Small Business RV110W, RV130, RV130W, and RV215W routers where attackers can reach the management interface and obtain valid administrator credentials. Internet-reachable management interfaces raise urgency, but the source bundle does not state exposure prevalence.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires valid administrator credentials, but successful exploitation can provide root-level execution or cause device reloads. No exploit details are needed for validation.
Researcher notes
The provided evidence supports authenticated remote code execution and DoS through crafted HTTP requests to the management interface. The bundle identifies CWE-121 and CVSS 7.2. It does not provide fixed versions, exploit prevalence, or public exploitation evidence.
Mitigation direction
- Check Cisco advisory for current vendor guidance before making changes.
- Disable internet exposure of the web management interface where possible.
- Restrict management access to trusted administrative networks or VPN paths.
- Review and harden administrator credentials for affected routers.
- Plan replacement or isolation if no fixed Cisco software is available.
Validation and detection
- Inventory Cisco RV110W, RV130, RV130W, and RV215W routers.
- Confirm whether the web management interface is reachable remotely.
- Verify administrator accounts, password age, and access controls.
- Review device logs for unexpected admin activity or unexplained reloads.
- Compare deployed devices against Cisco advisory affected products.
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-2021-1183 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.
