# CVE-2022-41787: BIG-IP DNS Express vulnerability CVE-2022-41787

> Attackers can cause a denial of service by sending specific DNSSEC queries to BIG-IP DNS Express when configured on a virtual server.

- **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:** 19 Oct 2022
- **Updated:** 6 May 2025
- **Also known as:** GHSA-x82j-m6f3-7f78

## What is CVE-2022-41787?

CVE-2022-41787 is a high-severity vulnerability in F5 Big-Ip Domain Name System, published on 19 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In BIG-IP versions 17.0.x before 17.0.0.1, 16.1.x before 16.1.3.1, 15.1.x before 15.1.6.1, 14.1.x before 14.1.5.1, and 13.1.x before 13.1.5.1, when DNS profile is configured on a virtual server with DNS Express enabled, undisclosed DNS queries with DNSSEC can cause TMM to terminate.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2022-41787?

It affects 2 products.


Products: F5 Big-Ip Domain Name System, F5 Big-Ip Local Traffic Manager.

## How do I fix CVE-2022-41787?

No fix has been published for CVE-2022-41787 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-41787 being exploited?

There is no known exploitation of CVE-2022-41787 in the wild and no public exploit code.

## Other vulnerabilities in F5 Big-Ip Domain Name System

- [CVE-2022-23013](https://insights.sbomify.com/CVE-2022-23013/): Cross-site scripting in BIG-IP DNS & GTM (high 8.8)
- [CVE-2026-40061](https://insights.sbomify.com/CVE-2026-40061/): iControl REST and tmsh vulnerability (high 8.5)
- [CVE-2021-23032](https://insights.sbomify.com/CVE-2021-23032/): Denial of service in BIG-IP DNS (high 7.5)
- [CVE-2020-27717](https://insights.sbomify.com/CVE-2020-27717/): Denial of service in BIG-IP DNS (high 7.5)
- [CVE-2020-27721](https://insights.sbomify.com/CVE-2020-27721/): Denial of service in BIG-IP GTM & DNS (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-41787 and fix it if it is affected.

What it is: CVE-2022-41787 is a high-severity vulnerability in F5 Big-Ip Domain Name System, published on 19 Oct 2022. 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-2022-41787 in the wild and no public exploit code.

Affected product: F5 Big-Ip Domain Name System. 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-2022-41787/ (Markdown: https://insights.sbomify.com/CVE-2022-41787/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-41787
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-41787
- OSV: https://osv.dev/vulnerability/CVE-2022-41787

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-41787/
Summaries are generated and may contain mistakes; the official description above is the record.