What is CVE-2026-49879?

CVE-2026-49879 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-09-08.

How severe is CVE-2026-49879?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Google Android

CVE-2026-49879

In multiple functions of rw_t3t.cc, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

Vulnerability class: Buffer Overflow

Published 2026-09-08 · last modified 2026-09-23.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.0th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.0% 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 17.0, 15.0, 14.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

source.android.com/docs/security/bulletin/2026/2026-09-01 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-49879?: CVE-2026-49879 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-09-08.
How severe is CVE-2026-49879?: High severity. CVSS v3 base score is 8.8 out of 10.