Security readout for executives and security teams
Plain-English summary
CVE-2026-1690 affects Tenda HG10 firmware and allows command injection through a router management function. Public sources say remote attack is possible and proof-of-concept material is available. The CVSS score is medium, but exposed or poorly managed routers can create meaningful business risk.
Executive priority
Treat as a near-term remediation item for environments using Tenda HG10. Prioritize internet-exposed or shared-management networks first. The issue is not confirmed as actively exploited, but public exploit material and router impact justify prompt containment and vendor follow-up.
Technical view
The issue is in /boaform/formSysCmd, where manipulation of the sysCmd argument can trigger operating-system command injection. The listed affected build is US_HG7_HG9_HG10re_300001138_en_xpon for Tenda HG10 firmware. CVSS v2 is 5.8 with network access, low complexity, and required authentication.
Likely exposure
Organizations using Tenda HG10 devices with the listed firmware are potentially exposed, especially if the web management interface is reachable from untrusted networks. Sources indicate permissions are required, reducing unauthenticated internet risk but not insider, credentialed, or misconfigured-management exposure.
Exploitation context
The source bundle states an exploit has been published and may be used. There is no KEV listing in the provided data, so active exploitation is not confirmed. Public proof-of-concept availability increases the need to identify affected devices and restrict management access.
Researcher notes
Evidence is limited to CVE/VulDB/GitHub references in the bundle. The sources identify command injection in formSysCmd via sysCmd and require permissions per CVSS and VulDB indicators. No vendor patch version or official remediation is named in the provided sources.
Mitigation direction
- Inventory Tenda HG10 devices and identify firmware version US_HG7_HG9_HG10re_300001138_en_xpon.
- Check Tenda guidance for firmware updates, advisories, or replacement recommendations.
- Restrict router management access to trusted administrative networks only.
- Disable remote management where it is not operationally required.
- Use strong unique administrator credentials and review account access.
- Monitor management interfaces for unusual authenticated activity.
Validation and detection
- Confirm whether Tenda HG10 devices exist in the environment.
- Record firmware versions from approved administrative interfaces or asset tools.
- Verify management interfaces are not exposed to the public internet.
- Review firewall rules limiting access to router administration services.
- Check logs for unexpected administrative sessions or configuration changes.
- Track vendor advisories for confirmed fixes or mitigations.
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-74: 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 lookupCWE-77: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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-2026-1690 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
- Medium
- CVSS
- 5.8 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
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.
AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR6.46.4Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
5.8MediumVector: AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-343484 | Tenda HG10 formSysCmd system command injectionCVE reference · vdb-entry, technical-description
- VDB-343484 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference · signature, permissions-required
- Submit #741425 | Tenda HG10 US_HG7_HG9_HG10re_300001138_en_xpon Command InjectionCVE reference · third-party-advisory
- https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/formSysCmd-sysCmd-command.mdCVE reference · related, exploit
- https://www.tenda.com.cn/CVE reference · product
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 Special Elements in Output Used by a Downstream Component ('Injection')
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.