What is CVE-2026-2648?

CVE-2026-2648 is a high-severity vulnerability in Google Chrome, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-02-18.

How severe is CVE-2026-2648?

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

Buffer overflow in Google Chrome

CVE-2026-2648

Heap buffer overflow in PDFium in Google Chrome prior to 145.0.7632.109 allowed a remote attacker to perform an out of bounds memory write via a crafted PDF file. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

Published 2026-02-18 · last modified 2026-06-17.

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: 0.003 (25.6th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.003 · change: -0.001

Affected products

Google Chrome — versions 145.0.7632.109

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_18.html (Release Notes)
issues.chromium.org/issues/477033835 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-2648?: CVE-2026-2648 is a high-severity vulnerability in Google Chrome, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-02-18.
How severe is CVE-2026-2648?: High severity. CVSS v3 base score is 8.8 out of 10.