Read the docs
TI-2022-19451 Aliases CVE-2022-40868GHSA-4rrx-m76x-mwvv

Tenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a…

Priority HIGH 82CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Tenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formDelDhcpRule with the request /goform/delDhcpRules/

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01174 67th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:w20e_firmware:15.11.0.6:*:*:*:*:*:*:*15.11.0.6VulnerableTenda
cpe:2.3:h:tenda:w20e:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:w20e_firmware:15.11.0.6:*:*:*:*:*:*:* Versions 15.11.0.6 Vulnerable ·Tenda
  • cpe:2.3:h:tenda:w20e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-40868
  2. 2026-10-03 Alias added: GHSA-4rrx-m76x-mwvv

References

Exploit 1

  • TI-2026-19433 An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. CVSS 3.1CRITICAL 9.8
  • TI-2026-19431 An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. CVSS 3.1CRITICAL 9.8
  • TI-2026-19430 An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. CVSS 3.1CRITICAL 9.8
  • TI-2026-19429 An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. CVSS 3.1CRITICAL 9.8
  • TI-2026-19427 An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. CVSS 3.1CRITICAL 9.8
  • TI-2022-23824 Tenda W20E v15.11.0.6 was discovered to contain multiple stack overflows in the function… CVSS 3.1CRITICAL 9.8
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences