Security readout for executives and security teams
Plain-English summary
Certain InHand Networks IR615 router firmware versions have a help-page input validation flaw. If a user can be lured into interacting with a crafted request, malicious script could run in that user's browser session. The business concern is exposure of router administration users and possible tampering through their browser context.
Executive priority
Treat as high priority where affected routers support operational or remote connectivity. Prioritize asset confirmation first, then reduce management exposure and follow vendor guidance. Urgency is lower if affected firmware is absent or administration is tightly isolated.
Technical view
CVE-2021-38466 is a reflected cross-site scripting issue in InHand Networks IR615 Router versions 2.3.0.r4724 and 2.3.0.r4870. The flaw is CWE-79 and arises from insufficient input validation on client requests from the help page. CVSS 3.1 is 8.8 with network attack vector, no privileges, and required user interaction.
Likely exposure
Exposure is limited to organizations running InHand Networks IR615 Router firmware 2.3.0.r4724 or 2.3.0.r4870, especially where administrative or help-page access is reachable by users from less trusted networks.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. The CVSS vector indicates remote network reachability and no attacker privileges, but successful exploitation requires user interaction and affects the client browser context.
Researcher notes
Evidence supports reflected XSS on the IR615 help page only for the two listed firmware versions. No source-provided proof of active exploitation, exploit availability, or named fixed version is included in the bundle, so remediation claims should stay tied to vendor/CISA guidance.
Mitigation direction
- Inventory IR615 routers and identify firmware version.
- Check InHand Networks and CISA guidance for fixed firmware or vendor mitigations.
- Restrict router management access to trusted networks or VPN users.
- Reduce exposure of administrative/help pages from untrusted segments.
- Warn administrators against opening untrusted router-related links.
Validation and detection
- Confirm whether any IR615 routers run 2.3.0.r4724 or 2.3.0.r4870.
- Verify management interfaces are not exposed to the public internet.
- Review access controls around router administration pages.
- Check security monitoring for unusual requests to router help pages.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2021-38466 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L
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:R/S:C/C:H/I:L/A:L2.85.3Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://us-cert.cisa.gov/ics/advisories/icsa-21-280-05CVE reference · x_refsource_MISC
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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.