# CVE-2023-33537: Memory corruption in n/a

> A buffer overflow in TP-Link routers allows attackers to execute arbitrary code or cause a denial of service via the FixMapCfgRpm component.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`)
- **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:** 7 Jun 2023
- **Updated:** 7 Jan 2025
- **Also known as:** GHSA-jgv2-9hrr-wq97

## What is CVE-2023-33537?

CVE-2023-33537 is a high-severity memory corruption vulnerability in n/a, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a buffer overflow via the component /userRpm/FixMapCfgRpm.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2023-33537?

It affects 3 products.


Products: Tp-Link Tl-Wr740n Firmware, Tp-Link Tl-Wr841n Firmware, Tp-Link Tl-Wr940n Firmware.

## How do I fix CVE-2023-33537?

No fix has been published for CVE-2023-33537 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-33537 being exploited?

There is no known exploitation of CVE-2023-33537 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-33538](https://insights.sbomify.com/CVE-2023-33538/): TP-Link Multiple Routers Command Injection (high 8.8, exploited in the wild)
- [CVE-2023-33536](https://insights.sbomify.com/CVE-2023-33536/): Memory corruption in n/a (high 8.1)
- [CVE-2023-36356](https://insights.sbomify.com/CVE-2023-36356/): Denial of service in n/a (high 7.7)
- [CVE-2023-36354](https://insights.sbomify.com/CVE-2023-36354/): Memory corruption in n/a (high 7.5)
- [CVE-2022-4296](https://insights.sbomify.com/CVE-2022-4296/): TP-Link TL-WR740N ARP resource consumption (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-33537 and fix it if it is affected.

What it is: CVE-2023-33537 is a high-severity memory corruption vulnerability in n/a, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-33537 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-2023-33537/ (Markdown: https://insights.sbomify.com/CVE-2023-33537/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-33537
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-33537
- OSV: https://osv.dev/vulnerability/CVE-2023-33537

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-33537/
Summaries are generated and may contain mistakes; the official description above is the record.