# CVE-2023-33485: Memory corruption in n/a

> An authenticated attacker can trigger a buffer overflow in the addEffect function, potentially leading to arbitrary code execution on the router.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 31 May 2023
- **Updated:** 10 Jan 2025
- **Also known as:** GHSA-j33c-9c57-6gwm

## What is CVE-2023-33485?

CVE-2023-33485 is a high-severity memory corruption vulnerability in Totolink X5000r Firmware, published on 31 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

TOTOLINK X5000R V9.1.0u.6118_B20201102 and V9.1.0u.6369_B20230113 contains a post-authentication buffer overflow via parameter sPort/ePort in the addEffect function.

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

## Which versions are affected by CVE-2023-33485?

It affects 1 product.


Products: Totolink X5000r Firmware.

## How do I fix CVE-2023-33485?

No fix has been published for CVE-2023-33485 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-33485 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33485 exists.

## Other vulnerabilities in Totolink X5000r Firmware

- [CVE-2025-70327](https://insights.sbomify.com/CVE-2025-70327/): Command injection in n/a (critical 9.8)
- [CVE-2025-13184](https://insights.sbomify.com/CVE-2025-13184/): Auth bypass in X5000R's (AX1800 router) (critical 9.8)
- [CVE-2024-42737](https://insights.sbomify.com/CVE-2024-42737/): Command injection in n/a (critical 9.8)
- [CVE-2024-42745](https://insights.sbomify.com/CVE-2024-42745/): Command injection in n/a (critical 9.8)
- [CVE-2024-42748](https://insights.sbomify.com/CVE-2024-42748/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-33485 and fix it if it is affected.

What it is: CVE-2023-33485 is a high-severity memory corruption vulnerability in Totolink X5000r Firmware, published on 31 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33485 exists.

Affected product: Totolink X5000r Firmware. 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-2023-33485/ (Markdown: https://insights.sbomify.com/CVE-2023-33485/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-33485
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-33485
- OSV: https://osv.dev/vulnerability/CVE-2023-33485

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-33485/
Summaries are generated and may contain mistakes; the official description above is the record.