# CVE-2024-20069: Weak cryptography in MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8675, MT8771, MT8791T, MT8797

> A missing downgrade check in MediaTek VoWiFi IKE allows remote attackers to force weak algorithms, leading to information disclosure without user interaction.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 3 Jun 2024
- **Updated:** 1 Aug 2024
- **Also known as:** A-332178751, ASB-A-332178751, GHSA-c4q9-2wfm-wj48, M-MOLY01286330

## What is CVE-2024-20069?

CVE-2024-20069 is a medium-severity vulnerability in Mediatek Nr15, published on 3 Jun 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

In modem, there is a possible selection of less-secure algorithm during the VoWiFi IKE due to a missing DH downgrade check. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01286330; Issue ID: MSV-1430.

Weakness: CWE-757 (Selection of Less-Secure Algorithm During Negotiation)

## Which versions are affected by CVE-2024-20069?

It affects 1 product.


Products: Mediatek Nr15.

## How do I fix CVE-2024-20069?

Apply the vendor's patch.

## Is CVE-2024-20069 being exploited?

There is no known exploitation of CVE-2024-20069 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-2024-20069 and fix it if it is affected.

What it is: CVE-2024-20069 is a medium-severity vulnerability in Mediatek Nr15, published on 3 Jun 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-20069 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-2024-20069/ (Markdown: https://insights.sbomify.com/CVE-2024-20069/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-20069
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-20069
- OSV: https://osv.dev/vulnerability/CVE-2024-20069

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-20069/
Summaries are generated and may contain mistakes; the official description above is the record.