# CVE-2026-82695: Tenda AC18 Telnet telnet missing authentication

> Remote attackers can access the Tenda AC18 router's Telnet interface without authentication, potentially gaining administrative control.

- **Severity:** Critical 10.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Aug 2026
- **Updated:** 31 Aug 2026
- **Also known as:** GHSA-q8vr-4mj7-wm6v

## What is CVE-2026-82695?

CVE-2026-82695 is a critical authentication bypass vulnerability in Tenda AC18, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### 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.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-82695?


## How do I fix CVE-2026-82695?

No fix has been published for CVE-2026-82695 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-82695 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82695 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82695 and fix it if it is affected.

What it is: CVE-2026-82695 is a critical authentication bypass vulnerability in Tenda AC18, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82695 exists.

Affected product: Tenda AC18. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-82695/ (Markdown: https://insights.sbomify.com/CVE-2026-82695/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82695
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82695
- OSV: https://osv.dev/vulnerability/CVE-2026-82695

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82695/
Summaries are generated and may contain mistakes; the official description above is the record.