What is CVE-2026-17770?

CVE-2026-17770 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 5.8/10. Published 2026-07-30.

How severe is CVE-2026-17770?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Out-of-bounds Read in Apple macOS

CVE-2026-17770

Out of bounds read in Media in Google Chrome on Mac prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: Buffer Overflow

EPSS: 0.003 (17.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L.

Affected products

Apple Macos
Google Chrome — versions 151.0.7922.72

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

chrome-cve-admin@google.com (Release Notes, Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-17770?: CVE-2026-17770 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 5.8/10. Published 2026-07-30.
How severe is CVE-2026-17770?: Medium severity. CVSS v3 base score is 5.8 out of 10.