Command Injection Vulnerability in TRENDnet TEW-823DRU Router
CVE-2026-77988

5.1MEDIUM

Key Information:

Vendor

Trendnet

Status
Tew-823dru
Vendor
CVE Published:
22 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-77988?

A vulnerability has been found in the TRENDnet TEW-823DRU router's CLI Configuration Tool, specifically within the nvram_get function. This flaw allows for command injection, which can be exploited remotely. The potential for unauthorized access and manipulation of system commands poses significant risks, especially as exploit techniques have been disclosed publicly.

Affected Version(s)

TEW-823DRU 1.1.02b01

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-77988 - Proof of Concept

References

https://vuldb.com/vuln/394178
vdb-entrytechnical-description
https://vuldb.com/vuln/394178/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-77988
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ST4R0002 (VulDB User)
.