What is CVE-2021-25449?

CVE-2021-25449 is a medium-severity vulnerability in Google Android, classified under Heap-based Buffer Overflow. CVSS score: 6.5/10. Published 2021-09-09.

How severe is CVE-2021-25449?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Google Android

CVE-2021-25449

An improper input validation vulnerability in libsapeextractor library prior to SMR Sep-2021 Release 1 allows attackers to execute arbitrary code in mediaextractor process.

Vulnerability class: Buffer Overflow

Published 2021-09-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (31.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Google Android — versions 8.1, 9.0, 10.0
Samsung Mobile Devices — versions O(8.1), P(9.0), Q(10.0), R(11.0)

Weakness classification (CWE)

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2021-25449?: CVE-2021-25449 is a medium-severity vulnerability in Google Android, classified under Heap-based Buffer Overflow. CVSS score: 6.5/10. Published 2021-09-09.
How severe is CVE-2021-25449?: Medium severity. CVSS v3 base score is 6.5 out of 10.