# CVE-2021-35249: Domain Admin Broken Access Control

> Domain admins can read configuration and user data from other domains without proper authorization or logging, leading to information disclosure.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 May 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-wx33-6v5h-q453

## What is CVE-2021-35249?

CVE-2021-35249 is a medium-severity missing authorization vulnerability in Solarwinds Serv-U, published on 17 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

This broken access control vulnerability pertains specifically to a domain admin who can access configuration & user data of other domains which they should not have access to. Please note the admin is unable to modify the data (read only operation). This UAC issue leads to a data leak to unauthorized users for a domain, with no log of them accessing the data unless they attempt to modify it. This read-only activity is logged to the original domain and does not specify which domain was accessed.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2021-35249?

It affects 1 product.


Products: Solarwinds Serv-U.

## How do I fix CVE-2021-35249?

No fix has been published for CVE-2021-35249 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-35249 being exploited?

There is no known exploitation of CVE-2021-35249 in the wild and no public exploit code.

## Other vulnerabilities in Solarwinds Serv-U

- [CVE-2021-35211](https://insights.sbomify.com/CVE-2021-35211/): SolarWinds Serv-U Remote Code Execution (critical 9.0, exploited in the wild)
- [CVE-2024-28995](https://insights.sbomify.com/CVE-2024-28995/): SolarWinds Serv-U Path Traversal Vulnerability (high 8.6, exploited in the wild)
- [CVE-2026-28318](https://insights.sbomify.com/CVE-2026-28318/): SolarWinds Serv-U Uncontrolled Resource Consumption (high 7.5, exploited in the wild)
- [CVE-2021-35247](https://insights.sbomify.com/CVE-2021-35247/): SolarWinds Serv-U Improper Input Validation (medium 4.3, exploited in the wild)
- [CVE-2020-35481](https://insights.sbomify.com/CVE-2020-35481/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-35249 and fix it if it is affected.

What it is: CVE-2021-35249 is a medium-severity missing authorization vulnerability in Solarwinds Serv-U, published on 17 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-35249 in the wild and no public exploit code.

Affected product: Solarwinds Serv-U. 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-2021-35249/ (Markdown: https://insights.sbomify.com/CVE-2021-35249/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-35249
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-35249
- OSV: https://osv.dev/vulnerability/CVE-2021-35249

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-35249/
Summaries are generated and may contain mistakes; the official description above is the record.