# CVE-2022-26376: Memory corruption in Asuswrt-Merlin New Gen

> A memory corruption flaw in Asuswrt 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-5v6f-j685-6xv8

## What is CVE-2022-26376?

CVE-2022-26376 is a medium-severity memory corruption vulnerability in Asuswrt-Merlin New Gen, 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 Asuswrt prior to 3.0.0.4.386_48706 and Asuswrt-Merlin New Gen prior to 386.7.. 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-2022-26376?

It affects 19 products.


Products: Asus Asuswrt, Asus Et12 Firmware, Asus Gt-Ax11000 Firmware, Asus Gt-Ax11000 Pro Firmware, Asus Gt-Ax6000 Firmware, Asus Gt-Axe16000 Firmware, Asus Rt-Ax55 Firmware, Asus Rt-Ax56u Firmware, Asus Rt-Ax58u Firmware, Asus Rt-Ax68u Firmware, Asus Rt-Ax82u Firmware, Asus Rt-Ax86u Firmware, Asus Tuf-Ax3000 V2 Firmware, Asus Xd4 Firmware, Asus Xd6 Firmware, Asus Xt12 Firmware, Asus Xt8 Firmware, Asus Xt9 Firmware, Asuswrt-Merlin New Gen.

## How do I fix CVE-2022-26376?

No fix has been published for CVE-2022-26376 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-26376 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-26376 exists.

## Other vulnerabilities in Asuswrt-Merlin New Gen

- [CVE-2018-20334](https://insights.sbomify.com/CVE-2018-20334/): Command injection in n/a (critical 9.8)
- [CVE-2018-5999](https://insights.sbomify.com/CVE-2018-5999/): Auth bypass in n/a (critical 9.8)
- [CVE-2018-6000](https://insights.sbomify.com/CVE-2018-6000/): Missing authorization in n/a (critical 9.8)
- [CVE-2017-15655](https://insights.sbomify.com/CVE-2017-15655/): Memory corruption in n/a (critical 9.6)
- [CVE-2017-15653](https://insights.sbomify.com/CVE-2017-15653/): Auth bypass in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-26376 and fix it if it is affected.

What it is: CVE-2022-26376 is a medium-severity memory corruption vulnerability in Asuswrt-Merlin New Gen, 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-2022-26376 exists.

Affected product: Asuswrt-Merlin New Gen. 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-2022-26376/ (Markdown: https://insights.sbomify.com/CVE-2022-26376/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-26376
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-26376
- OSV: https://osv.dev/vulnerability/CVE-2022-26376

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-26376/
Summaries are generated and may contain mistakes; the official description above is the record.