# CVE-2026-27520: Binardat 10G08-0800GSM Network Switch Base64-encoded Password Stored in Cookie

> Attackers can recover plaintext passwords from Base64-encoded cookies, leading to unauthorized access on Binardat network switches.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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:** 26 Feb 2026
- **Also known as:** GHSA-m84g-fpm8-mqg8

## What is CVE-2026-27520?

CVE-2026-27520 is a high-severity 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 versions prior to V300SP10260209 store a user password in a client-side cookie as a Base64-encoded value accessible via the web interface. Because Base64 is reversible and provides no confidentiality, an attacker who can access the cookie value can recover the plaintext password.

Weakness: CWE-312 (Cleartext Storage of Sensitive Information)

## Which versions are affected by CVE-2026-27520?

It affects 1 product.


Products: Binardat 10g08-0800gsm Firmware.

## How do I fix CVE-2026-27520?

No fix has been published for CVE-2026-27520 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-27520 being exploited?

There is no known exploitation of CVE-2026-27520 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-2026-27516](https://insights.sbomify.com/CVE-2026-27516/): Binardat 10G08-0800GSM Network Switch Plaintext Password Exposure (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27520 and fix it if it is affected.

What it is: CVE-2026-27520 is a high-severity 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-2026-27520 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-2026-27520/ (Markdown: https://insights.sbomify.com/CVE-2026-27520/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27520
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27520
- OSV: https://osv.dev/vulnerability/CVE-2026-27520

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-27520/
Summaries are generated and may contain mistakes; the official description above is the record.