CVE-2026-4455

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-20 · updated 2026-06-17
Weakness: CWE-122

Description

Heap buffer overflow in PDFium in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: High)

Affected products

Google Chrome: before 146.0.7680.153 — fixed in 146.0.7680.153

How to fix

Upgrade to a fixed version: Google Chrome 146.0.7680.153. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html
https://issues.chromium.org/issues/488585504

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