# CVE-2025-20753: Denial of service in MT2735, MT2737, MT6833, MT6833P, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT8675, MT8771, MT8791, MT8791T, MT8797

> Remote attackers can cause system crashes in MediaTek devices by connecting them to a rogue base station, requiring no user interaction or privileges.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/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:** Yes
- **Published:** 2 Dec 2025
- **Updated:** 2 Dec 2025
- **Also known as:** A-445785195, ASB-A-445785195, GHSA-qp34-x42w-4gfq, M-MOLY01689252

## What is CVE-2025-20753?

CVE-2025-20753 is a medium-severity denial of service vulnerability in Mediatek Nr15, published on 2 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In Modem, there is a possible system crash due to an uncaught exception. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01689252; Issue ID: MSV-4841.

Weakness: CWE-248 (Uncaught Exception)

## Which versions are affected by CVE-2025-20753?

It affects 2 products.


Products: Mediatek Nr15, Mediatek Nr16.

## How do I fix CVE-2025-20753?

Apply the vendor's patch.

## Is CVE-2025-20753 being exploited?

There is no known exploitation of CVE-2025-20753 in the wild and no public exploit code.

## Other vulnerabilities in Mediatek Nr15

- [CVE-2024-20082](https://insights.sbomify.com/CVE-2024-20082/): Memory corruption in MT2735, MT2737, MT6833, MT6835, MT6835T, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983, MT6985, MT6989, MT6990 (critical 9.8)
- [CVE-2025-20708](https://insights.sbomify.com/CVE-2025-20708/): Memory corruption in MT2735, MT2737, MT6813, MT6815, MT6833, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6878, MT6878M, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6899, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT6991, MT8673, MT8675, MT8676, MT8678, MT8771, MT8791, MT8791T, MT8792, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 (high 8.8)
- [CVE-2024-20094](https://insights.sbomify.com/CVE-2024-20094/): Denial of service in MT2735, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8771, MT8791, MT8791T, MT8797 (high 7.5)
- [CVE-2024-20003](https://insights.sbomify.com/CVE-2024-20003/): Denial of service in MT2735, MT6297, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8791, MT8791T, MT8797 (high 7.5)
- [CVE-2024-20004](https://insights.sbomify.com/CVE-2024-20004/): Denial of service in MT2735, MT6297, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8791, MT8791T, MT8797 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-20753 and fix it if it is affected.

What it is: CVE-2025-20753 is a medium-severity denial of service vulnerability in Mediatek Nr15, published on 2 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-20753 in the wild and no public exploit code.

Affected product: Mediatek Nr15. 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-2025-20753/ (Markdown: https://insights.sbomify.com/CVE-2025-20753/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-20753
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-20753
- OSV: https://osv.dev/vulnerability/CVE-2025-20753

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-20753/
Summaries are generated and may contain mistakes; the official description above is the record.