CVE-2025-20678 Denial of service in MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6771, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6785U, MT6789, MT6813, 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, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT6991, MT8666, MT8667, MT8673, MT8675, MT8676, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8789, MT8791, MT8791T, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
Medium 6.5
Published
Updated
Check this codebase for CVE-2025-20678 and fix it if it is affected.
What it is: CVE-2025-20678 is a medium-severity denial of service vulnerability in Mediatek Nr15, published on 2 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-20678 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-2025-20678/ (Markdown: https://insights.sbomify.com/CVE-2025-20678/index.md)
A remote attacker can cause a system crash in MediaTek IMS services via a rogue base station, requiring no user interaction or privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-20678?
CVE-2025-20678 is a medium-severity denial of service vulnerability in Mediatek Nr15, published on 2 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In ims service, there is a possible system crash due to incorrect error handling. 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: MOLY01394606; Issue ID: MSV-2739.
Weakness: CWE-674
Which versions are affected by CVE-2025-20678?
It affects 6 products.
Products include Mediatek Lr12a, Mediatek Lr13, Mediatek Nr15, Mediatek Nr16, Mediatek Nr17, Mediatek Nr17r.
How do I fix CVE-2025-20678?
No fix has been published for CVE-2025-20678 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-20678 being exploited?
There is no known exploitation of CVE-2025-20678 in the wild and no public exploit code.
Other vulnerabilities in Mediatek Nr15
- CVE-2024-20154 Memory corruption in MT2735, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6785U, MT6789, MT6833P, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6880, MT6880T, MT6880U, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8666, MT8673, MT8675, MT8765, MT8766, MT8768, MT8771, MT8781, MT8786, MT8788, MT8788E, MT8789, MT8791T, MT8795T, MT8797, MT8798
- CVE-2024-20039 Memory corruption in MT2731, MT2735, MT2737, MT3967, MT6297, MT6298, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769T, MT6769Z, MT6771, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6785U, MT6789, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983, MT6985, MT6986, MT6986D, MT6989, MT6990, MT8666, MT8667, MT8673, MT8675, MT8676, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8791, MT8791T, MT8792, MT8796, MT8797, MT8798
- CVE-2023-32840 Memory corruption in MT2731, MT2735, MT6731, MT6739, MT6761, MT6762, MT6763, MT6765, MT6767, MT6768, MT6769, MT6769T, MT6769Z, MT6771, MT6771T, MT6813, MT6833, MT6833P, MT6835, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6877T, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983T, MT6983W, MT6983Z, MT6985, MT6985T, MT6989, MT6990, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797, MT8798
- CVE-2025-20727 Memory corruption in MT2735, MT2737, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6771, MT6813, 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, MT8666, MT8667, MT8673, MT8675, MT8676, MT8678, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8786, MT8788, MT8788E, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
- CVE-2026-20434 Memory corruption in MediaTek chipset
Sources
Also known as GHSA-fxp8-rw49-cf65.