What is CVE-2025-20704?

CVE-2025-20704 is a high-severity vulnerability in Mediatek Mt6813, classified under Out-of-bounds Write. CVSS score: 8.0/10. Published 2025-09-01.

How severe is CVE-2025-20704?

High severity. CVSS v3 base score is 8.0 out of 10.

Buffer overflow in Mediatek Mt6813

CVE-2025-20704

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution priv…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (20.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mediatek Mt6813
Mediatek Mt6835
Mediatek Mt6835t
Mediatek Mt6878
Mediatek Mt6878m
Mediatek Mt6897
Mediatek Mt6899
Mediatek Mt6991
Mediatek Mt8676
Mediatek Mt8678

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-20704?: CVE-2025-20704 is a high-severity vulnerability in Mediatek Mt6813, classified under Out-of-bounds Write. CVSS score: 8.0/10. Published 2025-09-01.
How severe is CVE-2025-20704?: High severity. CVSS v3 base score is 8.0 out of 10.