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
High 8.4
Published
Updated
Check this codebase for CVE-2023-32840 and fix it if it is affected.
What it is: CVE-2023-32840 is a high-severity memory corruption vulnerability in Mediatek Nr15, published on 6 Nov 2023. 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-2023-32840 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-2023-32840/ (Markdown: https://insights.sbomify.com/CVE-2023-32840/index.md)
A missing bounds check in MediaTek modem firmware allows local attackers with system privileges to escalate privileges via out-of-bounds write.
- 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-2023-32840?
CVE-2023-32840 is a high-severity memory corruption vulnerability in Mediatek Nr15, published on 6 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In modem CCCI, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction may be also needed for exploitation Patch ID: MOLY01138425; Issue ID: MOLY01138425 (MSV-862).
Weakness: CWE-787
Which versions are affected by CVE-2023-32840?
It affects 4 products.
Products include Mediatek Lr12a, Mediatek Nr15, Mediatek Nr16, Mediatek Nr17.
How do I fix CVE-2023-32840?
No fix has been published for CVE-2023-32840 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-32840 being exploited?
There is no known exploitation of CVE-2023-32840 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-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
- CVE-2025-20725 Memory corruption in MT2735, MT2737, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6771, 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, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8786, MT8788, MT8788E, MT8791, MT8791T, MT8795T, MT8797, MT8798, MT8893
Sources
Also known as GHSA-wxqm-9ppv-v25j.