CVE-2026-6311 — Use of Uninitialized Variable in Google Chrome

CWE-457 — Use of Uninitialized VariableCWE-824 — Access of Uninitialized Pointer7 documents7 sources
Severity
8.3HIGHNVD
EPSS
0.0%
top 93.94%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Google Chrome
Timeline
PublishedApr 15
Latest updateApr 16

Description

Uninitialized Use in Accessibility in Google Chrome on Windows prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:HExploitability: 1.6 | Impact: 6.0

Affected Packages1 packages

▶CVEListV5google/chrome147.0.7727.101 — 147.0.7727.101

🔴Vulnerability Details

3
VulDB
Google Chrome up to 147.0.7727.55 on Windows Accessibility uninitialized variable (ID 498201)↗2026-04-16
▶
CVEList
CVE-2026-6311: Uninitialized Use in Accessibility in Google Chrome on Windows prior to 147↗2026-04-15
▶
GHSA
GHSA-vhh6-f54w-x5gw: Uninitialized Use in Accessibility in Google Chrome on Windows prior to 147↗2026-04-15
▶

📋Vendor Advisories

2
Red Hat
chromium-browser: Uninitialized Use in Accessibility↗2026-04-15
▶
Chrome
Stable Channel Update for Desktop: CVE-2026-6311↗2026-04-15
▶

💬Community

1
Bugzilla
CVE-2026-6311 Google Chrome: Chromium: Google Chrome: Sandbox escape via uninitialized use in Accessibility↗2026-04-15
▶
CVE-2026-6311 — Use of Uninitialized Variable in Google | cvebase