What is CVE-2026-12444?

CVE-2026-12444 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-06-17.

How severe is CVE-2026-12444?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Out-of-bounds Read in Apple macOS

CVE-2026-12444

Out of bounds read in Chromoting in Google Chrome on Windows prior to 149.0.7827.155 allowed a local attacker to obtain potentially sensitive information from process memory via a malicious file. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

Published 2026-06-17 · last modified 2026-06-18.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (3.0th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.0% 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

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175051… (Vendor Advisory)
issues.chromium.org/issues/513160088 (Permissions Required)

Frequently asked questions

What is CVE-2026-12444?: CVE-2026-12444 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-06-17.
How severe is CVE-2026-12444?: Medium severity. CVSS v3 base score is 5.5 out of 10.