# CVE-2025-10953: UTT 1200GW/1250GW formApMail buffer overflow

> Remote attackers can trigger a buffer overflow in UTT wireless gateways via the senderEmail parameter, potentially leading to code execution or service disruption.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **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:** 25 Sep 2025
- **Updated:** 25 Sep 2025
- **Also known as:** GHSA-v27g-242w-v6v4

## What is CVE-2025-10953?

CVE-2025-10953 is a high-severity memory corruption vulnerability in UTT 1200GW, published on 25 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security vulnerability has been detected in UTT 1200GW and 1250GW up to 3.0.0-170831/3.2.2-200710. This vulnerability affects unknown code of the file /goform/formApMail. The manipulation of the argument senderEmail leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-10953?

It affects 2 products.


Products: Utt 1200gw Firmware, Utt 1250gw Firmware.

## How do I fix CVE-2025-10953?

No fix has been published for CVE-2025-10953 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-10953 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10953 exists.

## Other vulnerabilities in UTT 1200GW

- [CVE-2025-10757](https://insights.sbomify.com/CVE-2025-10757/): UTT 1200GW formConfigDnsFilterGlobal buffer overflow (high 8.7)
- [CVE-2025-10169](https://insights.sbomify.com/CVE-2025-10169/): UTT 1200GW ConfigWirelessBase buffer overflow (high 8.7)
- [CVE-2025-10170](https://insights.sbomify.com/CVE-2025-10170/): UTT 1200GW formApLbConfig sub_4B48F8 buffer overflow (high 8.7)
- [CVE-2026-31058](https://insights.sbomify.com/CVE-2026-31058/): Memory corruption in n/a (medium 4.5)
- [CVE-2026-31063](https://insights.sbomify.com/CVE-2026-31063/): Memory corruption in n/a (medium 4.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-10953 and fix it if it is affected.

What it is: CVE-2025-10953 is a high-severity memory corruption vulnerability in UTT 1200GW, published on 25 Sep 2025. 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-2025-10953 exists.

Affected product: UTT 1200GW. 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-2025-10953/ (Markdown: https://insights.sbomify.com/CVE-2025-10953/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-10953
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-10953
- OSV: https://osv.dev/vulnerability/CVE-2025-10953

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-10953/
Summaries are generated and may contain mistakes; the official description above is the record.