What is CVE-2025-8879?

CVE-2025-8879 is a high-severity vulnerability in Apple Macos, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-08-13.

How severe is CVE-2025-8879?

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

Is CVE-2025-8879 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Apple Macos

CVE-2025-8879

Heap buffer overflow in libaom in Google Chrome prior to 139.0.7258.127 allowed a remote attacker to potentially exploit heap corruption via a curated set of gestures. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

EPSS: 0.003 (17.9th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2025-8879?: CVE-2025-8879 is a high-severity vulnerability in Apple Macos, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-08-13.
How severe is CVE-2025-8879?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-8879 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.