What is CVE-2026-13033?

CVE-2026-13033 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2026-06-24.

How severe is CVE-2026-13033?

High severity. CVSS v3 base score is 8.8 out of 10.

Out-of-bounds Read in Apple macOS

CVE-2026-13033

Out of bounds read and write in Blink>InterestGroups in Google Chrome prior to 149.0.7827.197 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

Vulnerability class: Buffer Overflow

Published 2026-06-24 · last modified 2026-06-25.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.9% 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

Weakness classification (CWE)

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0482630… (Vendor Advisory)
issues.chromium.org/issues/523677844 (Permissions Required)

Frequently asked questions

What is CVE-2026-13033?: CVE-2026-13033 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2026-06-24.
How severe is CVE-2026-13033?: High severity. CVSS v3 base score is 8.8 out of 10.