What is CVE-2021-25346?

CVE-2021-25346 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2021-03-04.

How severe is CVE-2021-25346?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Google Android

CVE-2021-25346

A possible arbitrary memory overwrite vulnerabilities in quram library version prior to SMR Jan-2021 Release 1 allow arbitrary code execution.

Vulnerability class: Buffer Overflow

Published 2021-03-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.013 (68.8th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.000

Affected products

Google Android — versions 8.0, 8.1, 9.0
Samsung Mobile Devices — versions O(8.x), P(9.0), Q(10.0)

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)
security.samsungmobile.com/ (Vendor Advisory)
www.zerodayinitiative.com/advisories/ZDI-21-342/ (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-25346?: CVE-2021-25346 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2021-03-04.
How severe is CVE-2021-25346?: High severity. CVSS v3 base score is 7.1 out of 10.