What is CVE-2026-9987?

CVE-2026-9987 is a high-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2026-05-28.

How severe is CVE-2026-9987?

High severity. CVSS v3 base score is 7.8 out of 10.

Improper input validation in Google Android

CVE-2026-9987

Insufficient validation of untrusted input in WebAppInstalls in Google Chrome on Android prior to 148.0.7778.216 allowed a local attacker to execute arbitrary code via a malicious file. (Chromium security severity: High)

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-05-28 · last modified 2026-07-21.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.8th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Google Android
Google Chrome — versions 148.0.7778.216

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304… (Vendor Advisory)
issues.chromium.org/issues/513046475 (Permissions Required)

Frequently asked questions

What is CVE-2026-9987?: CVE-2026-9987 is a high-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2026-05-28.
How severe is CVE-2026-9987?: High severity. CVSS v3 base score is 7.8 out of 10.