What is CVE-2025-21006?

CVE-2025-21006 is a high-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 7.0/10. Published 2025-07-08.

How severe is CVE-2025-21006?

High severity. CVSS v3 base score is 7.0 out of 10.

Buffer overflow in Samsung Android

CVE-2025-21006

Out-of-bounds write in handling of macro blocks for MPEG4 codec in libsavsvc.so prior to Android 15 allows local attackers to write out-of-bounds memory.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (2.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Samsung Android
Samsung Mobile Libsavsvc.so — versions Android 15

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

mobile.security@samsung.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-21006?: CVE-2025-21006 is a high-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 7.0/10. Published 2025-07-08.
How severe is CVE-2025-21006?: High severity. CVSS v3 base score is 7.0 out of 10.