CVE-2026-6305 — Heap-based Buffer Overflow in Google Chrome

CWE-122 — Heap-based Buffer OverflowCWE-787 — Out-of-bounds Write8 documents6 sources
Severity
8.8HIGHNVD
EPSS
0.0%
top 93.33%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Google Chrome
Timeline
PublishedApr 15

Description

Heap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages1 packages

▶CVEListV5google/chrome147.0.7727.101 — 147.0.7727.101

🔴Vulnerability Details

2
CVEList
CVE-2026-6305: Heap buffer overflow in PDFium in Google Chrome prior to 147↗2026-04-15
▶
GHSA
GHSA-j7wg-hx8x-r38h: Heap buffer overflow in PDFium in Google Chrome prior to 147↗2026-04-15
▶

📋Vendor Advisories

2
Red Hat
chromium-browser: Heap buffer overflow in PDFium↗2026-04-15
▶
Chrome
Stable Channel Update for Desktop: CVE-2026-6303↗2026-04-15
▶

💬Community

3
Bugzilla
CVE-2026-6305 chromium-browser: Heap buffer overflow in PDFium↗2026-04-15
▶
Bugzilla
CVE-2026-6296 CVE-2026-6297 CVE-2026-6298 CVE-2026-6300 CVE-2026-6301 CVE-2026-6302 CVE-2026-6305 CVE-2026-6306 CVE-2026-6307 CVE-2026-6318 CVE-2026-6319 CVE-2026-6358 CVE-2026-6359 CVE-2026-6360 CVE-↗2026-04-15
▶
Bugzilla
CVE-2026-6296 CVE-2026-6297 CVE-2026-6298 CVE-2026-6300 CVE-2026-6301 CVE-2026-6302 CVE-2026-6305 CVE-2026-6306 CVE-2026-6307 CVE-2026-6318 CVE-2026-6319 CVE-2026-6358 CVE-2026-6359 CVE-2026-6360 CVE-↗2026-04-15
▶