Vulnerability · Published Aug 31, 2026 · Assigned by VulDB
CVE-2026-82695Tenda AC18 Telnet telnet missing authentication
Critical 10.0
In plain English
A critical-severity missing authentication in AC18 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities).
Severity (CVSS 3.1)10.0Critical
Exploit odds (30 days)1.4%top 27.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A security flaw has been discovered in Tenda AC18 15.03.05.19. Impacted is an unknown function of the file /goform/telnet of the component Telnet Handler. The manipulation results in missing authentication. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
Affected products (as reported)
Weakness: CWE-306, CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-397183 | Tenda AC18 Telnet telnet missing authentication vdb-entry
- VDB-397183 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-82695 | CVE Analysis and Report third-party-advisory
- Submit #894242 | Tenda AC18 ac18_kf_V15.03.05.19 Missing Authentication for Critical Function third-party-advisory
- https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TENDA-AC18-TELNET-DEFAULT-UNAUTH-001-vulndb.md exploit
- https://www.tenda.com.cn/ product