Security readout for executives and security teams
Plain-English summary
CVE-2021-1193 affects the web management interface on several Cisco Small Business RV routers. An attacker with valid administrator credentials could send crafted HTTP requests that run code as root or restart the device. Cisco’s record says no software updates were released for these vulnerabilities.
Executive priority
Treat this as a high-priority lifecycle and exposure issue, not a mass unauthenticated internet worm scenario. The main concern is severe impact after administrator credential compromise and the absence of listed software updates.
Technical view
The issue is improper validation of user-supplied input in the management interface, with CWE-121 listed. Attack prerequisites are network access to the interface and valid administrator credentials. Successful exploitation can provide root-level code execution or trigger device reload, causing denial of service. CVSS v3.1 is 7.2 high.
Likely exposure
Exposure is likely limited to organizations still operating Cisco RV110W, RV130, RV130W, or RV215W routers, especially if the web management interface is reachable beyond tightly controlled administrator networks.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires valid administrator credentials, but impact is severe if an admin account is compromised or misused.
Researcher notes
Do not assume unauthenticated exploitability. The source states PR:H and valid administrator credentials are required. Validation should focus on model identification, management-plane reachability, credential hygiene, and evidence of reloads or unauthorized management activity.
Mitigation direction
- Check Cisco’s advisory for current product guidance and replacement direction.
- Restrict web management access to trusted administrator networks only.
- Remove unnecessary administrator accounts and rotate exposed credentials.
- Replace affected routers where risk cannot be acceptably contained.
- Monitor devices for unexpected reloads or suspicious management activity.
Validation and detection
- Inventory for Cisco RV110W, RV130, RV130W, and RV215W devices.
- Confirm whether web-based management is enabled and where it is reachable.
- Review administrator account lists for stale or shared credentials.
- Check logs for unusual management requests or unexpected restarts.
- Verify whether Cisco has since published any updated advisory guidance.
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-2021-1193 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.
