Heap Buffer Overflow Vulnerability in Mediatek Modem
CVE-2025-20727

8.1HIGH

Key Information:

Vendor

MediaTek
Status
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
Vendor
CVE Published:
4 November 2025

What is CVE-2025-20727?

A heap buffer overflow vulnerability in Mediatek's modem could allow an attacker to perform remote escalation of privilege if a user equipment (UE) connects to a malicious base station. This exploitation does not require any user interaction and can lead to unauthorized access, potentially compromising the integrity of the device. The issue is categorized under Patch ID: MOLY01672601 and Issue ID: MSV-4623.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

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 Modem LR12A, NR15, NR16, NR17, NR17R

References

https://corp.mediatek.com/product-security-bulletin/Novem...

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.