CVE-2025-20763: In mmdvfs, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation…

CVE-2025-20763 · Severity: high · CVSS 7.8 · Published 2025-12-02

In mmdvfs, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10267218; Issue ID: MSV-5032.

Technologies: Google Android, MediaTek MT6833, MediaTek Mt6835, MediaTek Mt6853, MediaTek Mt6855, MediaTek Mt6877, MediaTek Mt6878, MediaTek Mt6879, MediaTek Mt6883, MediaTek Mt6885, MediaTek Mt6886, MediaTek Mt6889, MediaTek Mt6893, MediaTek Mt6895, MediaTek Mt6897, MediaTek Mt6899, MediaTek Mt6983, MediaTek Mt6985, MediaTek Mt6989, MediaTek Mt6991, MediaTek Mt8196, MediaTek MT8676, MediaTek MT8678, MediaTek MT8792, MediaTek Mt8793, MediaTek MT8796, MediaTek MT8873, MediaTek MT8893. Vendors: Google, MediaTek.

Quick answers

Is CVE-2025-20763 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-20763 being exploited in the wild.
How severe is CVE-2025-20763?
High severity, with a CVSS score of 7.8, published 2 December 2025.
Which products and versions are affected?
Google Android, MediaTek MT6833, MediaTek Mt6835, MediaTek Mt6853 and 24 more. The advisory does not name versions.
Is there a fix for CVE-2025-20763?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-20763?
Check whether you run Google Android, MediaTek MT6833, MediaTek Mt6835 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Google Android
  • MediaTek MT6833
  • MediaTek Mt6835
  • MediaTek Mt6853
  • MediaTek Mt6855
  • MediaTek Mt6877
  • MediaTek Mt6878
  • MediaTek Mt6879
  • MediaTek Mt6883
  • MediaTek Mt6885
  • MediaTek Mt6886
  • MediaTek Mt6889
  • MediaTek Mt6893
  • MediaTek Mt6895
  • MediaTek Mt6897
  • MediaTek Mt6899
  • MediaTek Mt6983
  • MediaTek Mt6985
  • MediaTek Mt6989
  • MediaTek Mt6991
  • MediaTek Mt8196
  • MediaTek MT8676
  • MediaTek MT8678
  • MediaTek MT8792
  • MediaTek Mt8793
  • MediaTek MT8796
  • MediaTek MT8873
  • MediaTek MT8893

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