Telnet Handler Vulnerability in Tenda AC18 Routers
CVE-2026-82695

10CRITICAL

Key Information:

Vendor

Tenda
Status
Ac18
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82695?

A security flaw has been identified in Tenda AC18 routers where the Telnet handler is susceptible to missing authentication. This vulnerability allows attackers to access critical functions of the router remotely, making it possible to exploit the device without authentication. The exploit has been publicly disclosed, raising concerns for users of the affected firmware version (15.03.05.19). It's essential for users to take preventive measures, such as disabling Telnet access or updating their devices to safeguard against potential attacks.

Affected Version(s)

AC18 15.03.05.19

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-2026-82695 - Proof of Concept

References

https://vuldb.com/vuln/397183
vdb-entry
https://vuldb.com/vuln/397183/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82695
third-party-advisory

CVSS V4

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
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

ST4R0003 (VulDB User)
.