What is CVE-2026-79057?

CVE-2026-79057 is a high-severity vulnerability in Google Chrome, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.1/10. Published 2026-08-25.

How severe is CVE-2026-79057?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Google Chrome

CVE-2026-79057

Race condition in Start in Google Chrome on on Android prior to 152.0.7977.65 allowed a local attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a co-installed app. (Chromium security severity: Medium)

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

Published 2026-08-25 · last modified 2026-08-27.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (0.8th percentile), scored 2026-10-10.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.8% 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 Chrome

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/505967344 (Permissions Required)

Frequently asked questions

What is CVE-2026-79057?: CVE-2026-79057 is a high-severity vulnerability in Google Chrome, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.1/10. Published 2026-08-25.
How severe is CVE-2026-79057?: High severity. CVSS v3 base score is 8.1 out of 10.