# CVE-2020-27523: Denial of service in n/a

> An attacker can crash the Solstice-Pod WEBRTC server by sending malicious format strings during authentication, causing a denial of service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 11 Nov 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-x7jm-5v9f-6mvx

## What is CVE-2020-27523?

CVE-2020-27523 is a high-severity denial of service vulnerability in n/a, published on 11 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Solstice-Pod up to 5.0.2 WEBRTC server mishandles the format-string specifiers %x; %p; %c and %s in the screen_key, display_name, browser_name, and operation_system parameter during the authentication process. This may crash the server and force Solstice-Pod to reboot, which leads to a denial of service.

Weakness: CWE-134 (Use of Externally-Controlled Format String)

## Which versions are affected by CVE-2020-27523?

It affects 1 product.


Products: Mersive Solstice Pod Firmware.

## How do I fix CVE-2020-27523?

No fix has been published for CVE-2020-27523 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-27523 being exploited?

There is no known exploitation of CVE-2020-27523 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-35585](https://insights.sbomify.com/CVE-2020-35585/): Auth bypass in n/a (high 7.5)
- [CVE-2020-35586](https://insights.sbomify.com/CVE-2020-35586/): Auth bypass in n/a (high 7.5)
- [CVE-2025-66573](https://insights.sbomify.com/CVE-2025-66573/): Solstice Pod API Session Key Extraction via API Endpoint (medium 6.9)
- [CVE-2020-35584](https://insights.sbomify.com/CVE-2020-35584/): Information disclosure in n/a (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-27523 and fix it if it is affected.

What it is: CVE-2020-27523 is a high-severity denial of service vulnerability in n/a, published on 11 Nov 2020. 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-2020-27523 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-2020-27523/ (Markdown: https://insights.sbomify.com/CVE-2020-27523/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-27523
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-27523
- OSV: https://osv.dev/vulnerability/CVE-2020-27523

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-27523/
Summaries are generated and may contain mistakes; the official description above is the record.