What is CVE-2026-5277?

CVE-2026-5277 is a high-severity vulnerability in Apple macOS, classified under CWE-472. CVSS score: 7.5/10. Published 2026-04-01.

How severe is CVE-2026-5277?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apple macOS

CVE-2026-5277

Integer overflow in ANGLE in Google Chrome on Windows prior to 146.0.7680.178 allowed a remote attacker who had compromised the renderer process to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: High)

Published 2026-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (18.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000

Affected products

Weakness classification (CWE)

CWE-472

References

chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html (Vendor Advisory)
issues.chromium.org/issues/489791424 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-5277?: CVE-2026-5277 is a high-severity vulnerability in Apple macOS, classified under CWE-472. CVSS score: 7.5/10. Published 2026-04-01.
How severe is CVE-2026-5277?: High severity. CVSS v3 base score is 7.5 out of 10.