# CVE-2023-46521: Memory corruption in n/a

> A stack overflow in the RegisterRegister function allows attackers to execute arbitrary code or cause denial of service on TP-LINK routers.

- **Severity:** High 8.8 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Oct 2023
- **Updated:** 11 Sep 2024
- **Also known as:** GHSA-8992-9q7r-8chp

## What is CVE-2023-46521?

CVE-2023-46521 is a high-severity memory corruption vulnerability in n/a, published on 25 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

TP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function RegisterRegister.

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

## Which versions are affected by CVE-2023-46521?

It affects 1 product.


Products: Tp-Link Tl-Wr886n Firmware.

## How do I fix CVE-2023-46521?

No fix has been published for CVE-2023-46521 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-46521 being exploited?

There is no known exploitation of CVE-2023-46521 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-44622](https://insights.sbomify.com/CVE-2021-44622/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-44623](https://insights.sbomify.com/CVE-2021-44623/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-44625](https://insights.sbomify.com/CVE-2021-44625/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-44626](https://insights.sbomify.com/CVE-2021-44626/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-44627](https://insights.sbomify.com/CVE-2021-44627/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-46521 and fix it if it is affected.

What it is: CVE-2023-46521 is a high-severity memory corruption vulnerability in n/a, published on 25 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-46521 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-2023-46521/ (Markdown: https://insights.sbomify.com/CVE-2023-46521/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-46521
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-46521
- OSV: https://osv.dev/vulnerability/CVE-2023-46521

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-46521/
Summaries are generated and may contain mistakes; the official description above is the record.