# CVE-2023-25113: Memory corruption in UR32L

> A buffer overflow in the vtysh_ubus binary allows high-privilege attackers to execute arbitrary code via crafted HTTP requests.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Jul 2023
- **Updated:** 4 Nov 2025
- **Also known as:** GHSA-c4ww-v9wx-jcm4

## What is CVE-2023-25113?

CVE-2023-25113 is a high-severity memory corruption vulnerability in Milesight Ur32l Firmware, published on 6 Jul 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Multiple buffer overflow vulnerabilities exist in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 due to the use of an unsafe sprintf pattern. A specially crafted HTTP request can lead to arbitrary code execution. An attacker with high privileges can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the set_l2tp function with the key variable.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2023-25113?

It affects 1 product.


Products: Milesight Ur32l Firmware.

## How do I fix CVE-2023-25113?

No fix has been published for CVE-2023-25113 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-25113 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-25113 exists.

## Other vulnerabilities in Milesight Ur32l Firmware

- [CVE-2023-23902](https://insights.sbomify.com/CVE-2023-23902/): Memory corruption in UR32L (critical 9.8)
- [CVE-2023-47166](https://insights.sbomify.com/CVE-2023-47166/): Missing authorization in UR32L (high 8.8)
- [CVE-2023-22299](https://insights.sbomify.com/CVE-2023-22299/): Command injection in UR32L (high 8.8)
- [CVE-2023-22653](https://insights.sbomify.com/CVE-2023-22653/): Command injection in UR32L (high 8.8)
- [CVE-2023-24018](https://insights.sbomify.com/CVE-2023-24018/): Memory corruption in UR32L (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-25113 and fix it if it is affected.

What it is: CVE-2023-25113 is a high-severity memory corruption vulnerability in Milesight Ur32l Firmware, published on 6 Jul 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-25113 exists.

Affected product: Milesight Ur32l 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-2023-25113/ (Markdown: https://insights.sbomify.com/CVE-2023-25113/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-25113
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-25113
- OSV: https://osv.dev/vulnerability/CVE-2023-25113

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-25113/
Summaries are generated and may contain mistakes; the official description above is the record.