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TI-2021-03457 Aliases CVE-2021-20157GHSA-4wgm-82f7-qm8p

It is possible for an unauthenticated, malicious user to force the device to reboot due…

Priority LOW 36Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

It is possible for an unauthenticated, malicious user to force the device to reboot due to a hidden administrative command.

Why it matters now

EPSS 0.016 75th 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

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Trendnet AC2600 TEW-827DRU2.08B01—No fix listedCNA
  • Trendnet AC2600 TEW-827DRU Vendor— Affected 2.08B01 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:trendnet:tew-827dru_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableTRENDnet
cpe:2.3:h:trendnet:tew-827dru:-:*:*:*:*:*:*:*not specified by NVDRunning onTRENDnet
  • cpe:2.3:o:trendnet:tew-827dru_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·TRENDnet
  • cpe:2.3:h:trendnet:tew-827dru:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TRENDnet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20157
  2. 2026-10-03 Alias added: GHSA-4wgm-82f7-qm8p

References

Exploit 1

  • TI-2024-18847 There is a command injection vulnerability in the TRENDnet TEW-827DRU router with… CVSS 3.1CRITICAL 10.0
  • TI-2024-18846 There is a command injection vulnerability in the TRENDnet TEW-827DRU router with… CVSS 3.1HIGH 8.8
  • TI-2024-24383 TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the… CVSS 3.1HIGH 8.1
  • TI-2021-03458 Missing authentication in Trendnet AC2600 TEW-827DRU CVSS 3.1CRITICAL 9.8
  • TI-2019-09962 TRENDnet TEW-827DRU with firmware up to and including 2.04B03 contains multiple command… CVSS 3.0CRITICAL 9.8
  • TI-2021-03450 Missing authentication in Trendnet AC2600 TEW-827DRU CVSS 3.1MEDIUM 5.3
See all 41 →

Sources

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