# CVE-2026-8983: Backdoor Authentication Token

> Attackers can bypass authentication on Autel Maxi Charger Single devices using a hard-coded token to access privileged management endpoints.

- **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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Jul 2026
- **Updated:** 22 Jul 2026
- **Also known as:** GHSA-hmfc-f829-2xf3

## What is CVE-2026-8983?

CVE-2026-8983 is a critical vulnerability in Autel MaxiCharger Single, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Autel Maxi Charger Single firmware through V1.03.51 contains a hard-coded authentication token that bypasses authorization checks for multiple management endpoints. An attacker can supply the special token value to invoke privileged functionality without valid authentication.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2026-8983?

It affects 1 product.


Products: Autel Maxicharger Single Charger Firmware.

## How do I fix CVE-2026-8983?

No fix has been published for CVE-2026-8983 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8983 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8983 exists.

## Other vulnerabilities in Autel MaxiCharger Single

- [CVE-2026-8982](https://insights.sbomify.com/CVE-2026-8982/): Hard-coded / Backdoor Accounts (critical 10.0)
- [CVE-2026-8984](https://insights.sbomify.com/CVE-2026-8984/): Unauthenticated RCE (critical 10.0)
- [CVE-2026-8985](https://insights.sbomify.com/CVE-2026-8985/): Unauthenticated Command Injection (critical 10.0)
- [CVE-2026-8986](https://insights.sbomify.com/CVE-2026-8986/): Command Injection via Malicious OCPP Server (critical 9.5)
- [CVE-2026-8987](https://insights.sbomify.com/CVE-2026-8987/): Authenticated Heap Overflow (critical 9.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8983 and fix it if it is affected.

What it is: CVE-2026-8983 is a critical vulnerability in Autel MaxiCharger Single, published on 21 Jul 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-2026-8983 exists.

Affected product: Autel MaxiCharger Single. 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-2026-8983/ (Markdown: https://insights.sbomify.com/CVE-2026-8983/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8983
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8983
- OSV: https://osv.dev/vulnerability/CVE-2026-8983

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-8983/
Summaries are generated and may contain mistakes; the official description above is the record.