# CVE-2020-35565: Security feature bypass in n/a

> Attackers can bypass brute-force protection on mymbCONNECT24 login pages, facilitating account takeover via password guessing.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Feb 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-4crm-7wj7-pr4w

## What is CVE-2020-35565?

CVE-2020-35565 is a critical vulnerability in n/a, published on 16 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in MB CONNECT LINE mymbCONNECT24 and mbCONNECT24 through 2.6.2. The login pages bruteforce detection is disabled by default.

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2020-35565?

It affects 2 products.


Products: Mbconnectline Mbconnect24, Mbconnectline Mymbconnect24.

## How do I fix CVE-2020-35565?

No fix has been published for CVE-2020-35565 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35565 being exploited?

There is no known exploitation of CVE-2020-35565 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-10383](https://insights.sbomify.com/CVE-2020-10383/): Code injection in n/a (critical 9.8)
- [CVE-2026-33615](https://insights.sbomify.com/CVE-2026-33615/): MB connect line mbCONNECT24 vulnerable to an unauthenticated SQL injection in the setinfo Endpoint (critical 9.1)
- [CVE-2023-0985](https://insights.sbomify.com/CVE-2023-0985/): Helmholz and MB Connect Line: Account takeover via password reset in multiple products (high 8.8)
- [CVE-2020-10382](https://insights.sbomify.com/CVE-2020-10382/): Code injection in n/a (high 8.8)
- [CVE-2020-35567](https://insights.sbomify.com/CVE-2020-35567/): Hardcoded credentials in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35565 and fix it if it is affected.

What it is: CVE-2020-35565 is a critical vulnerability in n/a, published on 16 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-35565 in the wild and no public exploit code.

Affected product: n/a. 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-2020-35565/ (Markdown: https://insights.sbomify.com/CVE-2020-35565/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35565
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35565
- OSV: https://osv.dev/vulnerability/CVE-2020-35565

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-35565/
Summaries are generated and may contain mistakes; the official description above is the record.