# CVE-2024-20149: Denial of service in MT2735, MT2737, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6785U, MT6789, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6878, MT6878M, MT6879, MT6880, MT6880T, MT6880U, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6899, MT6980, MT6980D, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT6991, MT8666, MT8673, MT8675, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8789, MT8791T, MT8795T, MT8797, MT8798, MT8863

> Remote attackers can cause a system crash in MediaTek chipsets via improper input validation in the modem, requiring no user interaction or privileges.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Jan 2025
- **Updated:** 6 Jan 2025
- **Also known as:** GHSA-7fhf-99f5-2645

## What is CVE-2024-20149?

CVE-2024-20149 is a high-severity denial of service vulnerability in Mediatek Nr15, published on 6 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01231341 / MOLY01263331 / MOLY01233835; Issue ID: MSV-2165.

Weakness: CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2024-20149?

It affects 6 products.


Products: Mediatek Lr12, Mediatek Lr13, Mediatek Nr15, Mediatek Nr16, Mediatek Nr17.r1, Mediatek Nr17.r2.

## How do I fix CVE-2024-20149?

No fix has been published for CVE-2024-20149 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-20149 being exploited?

There is no known exploitation of CVE-2024-20149 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-20149 and fix it if it is affected.

What it is: CVE-2024-20149 is a high-severity denial of service vulnerability in Mediatek Nr15, published on 6 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-20149 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-2024-20149/ (Markdown: https://insights.sbomify.com/CVE-2024-20149/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-20149
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-20149
- OSV: https://osv.dev/vulnerability/CVE-2024-20149

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-20149/
Summaries are generated and may contain mistakes; the official description above is the record.