Buffer overflow in Google Android
CVE-2026-56997
In Av1DecodeFrameTag of vp9hwd_headers.cc, there is a possible out-of-bounds write due to a missing bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Vulnerability class: Buffer Overflow
Published · last modified .
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 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% 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 Android kernel
Weakness classification (CWE)
References
- source.android.com/docs/security/bulletin/pixel/2026/2026-09-01 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-56997?
- CVE-2026-56997 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-09-15.
- How severe is CVE-2026-56997?
- High severity. CVSS v3 base score is 8.8 out of 10.