# CVE-2026-27521: Binardat 10G08-0800GSM Network Switch Missing Login Rate Limiting

> Binardat network switches lack login rate limiting, allowing attackers to brute-force credentials and gain unauthorized access.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Feb 2026
- **Updated:** 2 Mar 2026
- **Also known as:** GHSA-3547-c34m-73j3

## What is CVE-2026-27521?

CVE-2026-27521 is a medium-severity authentication bypass vulnerability in Binardat Ltd. 10G08-0800GSM Network Switch, published on 24 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Binardat 10G08-0800GSM network switch firmware version V300SP10260209 and prior do not implement rate limiting or account lockout on failed login attempts, enabling brute-force attacks against user credentials.

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

## Which versions are affected by CVE-2026-27521?

It affects 1 product.


Products: Binardat 10g08-0800gsm Firmware.

## How do I fix CVE-2026-27521?

No fix has been published for CVE-2026-27521 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-27521 being exploited?

There is no known exploitation of CVE-2026-27521 in the wild and no public exploit code.

## Other vulnerabilities in Binardat Ltd. 10G08-0800GSM Network Switch

- [CVE-2026-27507](https://insights.sbomify.com/CVE-2026-27507/): Binardat 10G08-0800GSM Network Switch Hard-coded Credentials (critical 9.3)
- [CVE-2026-27515](https://insights.sbomify.com/CVE-2026-27515/): Binardat 10G08-0800GSM Network Switch Predictable Session Identifiers (critical 9.3)
- [CVE-2026-23678](https://insights.sbomify.com/CVE-2026-23678/): Binardat 10G08-0800GSM Network Switch Traceroute CLI Command Injection (high 8.7)
- [CVE-2026-27519](https://insights.sbomify.com/CVE-2026-27519/): Binardat 10G08-0800GSM Network Switch Hard-coded RC4 Encryption Key (high 8.7)
- [CVE-2026-27520](https://insights.sbomify.com/CVE-2026-27520/): Binardat 10G08-0800GSM Network Switch Base64-encoded Password Stored in Cookie (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27521 and fix it if it is affected.

What it is: CVE-2026-27521 is a medium-severity authentication bypass vulnerability in Binardat Ltd. 10G08-0800GSM Network Switch, published on 24 Feb 2026. 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-2026-27521 in the wild and no public exploit code.

Affected product: Binardat Ltd. 10G08-0800GSM Network Switch. 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-2026-27521/ (Markdown: https://insights.sbomify.com/CVE-2026-27521/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27521
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27521
- OSV: https://osv.dev/vulnerability/CVE-2026-27521

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-27521/
Summaries are generated and may contain mistakes; the official description above is the record.