Use After Free in Apple macOS
CVE-2026-9964
Use after free in Bluetooth in Google Chrome on Mac prior to 148.0.7778.216 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: High)
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Apple macOS
- Google Chrome — versions 148.0.7778.216
Weakness classification (CWE)
References
- chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304… (Release Notes)
- issues.chromium.org/issues/505190999 (Permissions Required)
Frequently asked questions
- What is CVE-2026-9964?
- CVE-2026-9964 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 8.1/10. Published 2026-05-28.
- How severe is CVE-2026-9964?
- High severity. CVSS v3 base score is 8.1 out of 10.