# CVE-2022-27631: Memory corruption in DD-WRT

> A memory corruption flaw in DD-WRT's httpd allows remote attackers to execute arbitrary code or cause denial of service via crafted HTTP requests.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Aug 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-hhx7-c9wv-4ggc

## What is CVE-2022-27631?

CVE-2022-27631 is a medium-severity memory corruption vulnerability in DD-WRT, published on 5 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A memory corruption vulnerability exists in the httpd unescape functionality of DD-WRT Revision 32270 - Revision 48599. A specially-crafted HTTP request can lead to memory corruption. An attacker can send a network request to trigger this vulnerability.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2022-27631?

It affects 1 product.


Products: Dd-Wrt Dd-Wrt.

## How do I fix CVE-2022-27631?

No fix has been published for CVE-2022-27631 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-27631 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-27631 exists.

## Other vulnerabilities in DD-WRT

- [CVE-2021-27137](https://insights.sbomify.com/CVE-2021-27137/): DD-WRT Stack-Based Buffer Overflow (high 8.1, exploited in the wild)
- [CVE-2020-13976](https://insights.sbomify.com/CVE-2020-13976/): Command injection in n/a (high 8.8)
- [CVE-2012-6297](https://insights.sbomify.com/CVE-2012-6297/): Command injection in n/a (high 8.8)
- [CVE-2009-2765](https://insights.sbomify.com/CVE-2009-2765/): Command injection in n/a (high 8.3)
- [CVE-2009-2766](https://insights.sbomify.com/CVE-2009-2766/): Missing authorization in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-27631 and fix it if it is affected.

What it is: CVE-2022-27631 is a medium-severity memory corruption vulnerability in DD-WRT, published on 5 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-27631 exists.

Affected product: DD-WRT. 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-2022-27631/ (Markdown: https://insights.sbomify.com/CVE-2022-27631/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-27631
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-27631
- OSV: https://osv.dev/vulnerability/CVE-2022-27631

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-27631/
Summaries are generated and may contain mistakes; the official description above is the record.