Security readout for executives and security teams
Plain-English summary
This flaw could let an unauthenticated remote attacker take complete control of affected Cisco Small Business RV160/RV260 VPN routers through their web management interface. Successful compromise runs as root, so confidentiality, integrity, and availability are all at high risk.
Executive priority
Treat this as urgent for any affected Cisco Small Business VPN router, especially internet-facing devices. Root-level remote compromise of edge routers can disrupt operations, expose traffic paths, and provide attackers a foothold into internal networks.
Technical view
CVE-2021-1292 covers multiple improper HTTP request validation vulnerabilities in Cisco RV160, RV160W, RV260, RV260P, and RV260W VPN router web management interfaces. A crafted HTTP request can allow unauthenticated remote code execution as root. CVSS 3.1 is 9.8 with network attack vector and no required privileges or user interaction.
Likely exposure
Exposure depends on whether affected router models are deployed and whether the web-based management interface is reachable. Internet-exposed management interfaces are the highest-risk scenario. Internal-only interfaces remain important because compromise of a trusted network could still reach them.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation evidence. The vulnerability is still severe because exploitation requires no authentication, low complexity, and can result in root-level code execution on edge VPN infrastructure.
Researcher notes
The public bundle attributes the weakness to improper HTTP request validation and maps it to CWE-472. Evidence provided does not include exploit details, fixed release numbers, or workaround specifics beyond Cisco’s referenced advisory, so validation should stay focused on asset exposure and vendor guidance.
Mitigation direction
- Inventory Cisco RV160, RV160W, RV260, RV260P, and RV260W routers.
- Check Cisco’s advisory for fixed firmware and official remediation guidance.
- Restrict web management access to trusted administrative networks only.
- Remove any unnecessary internet exposure of the management interface.
- Monitor affected routers for unexpected configuration or service changes.
Validation and detection
- Confirm deployed router models and firmware versions against Cisco’s advisory.
- Verify whether web management is reachable from the internet.
- Confirm management access is limited to approved administrative networks.
- Review change records for past firmware remediation.
- Check logs and configuration for unexplained administrative activity.
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-472: 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-2021-1292 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20210203 Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Execution 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.
External Control of Assumed-Immutable Web Parameter
External Control of Assumed-Immutable Web Parameter represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.