CVE-2026-6311: Uninitialized Use in Accessibility
Chromium: CVE-2026-6311 Uninitialized Use in Accessibility
Other sources
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
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)
— MITRE
Credit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 147.0.7727.101 - Upgrade
Upgrade
Chromium / Microsoft Edge (Chromium-based)to a version that resolves this vulnerability.Fixed in 147.0.7727.101 - Compensating control
If immediate patching is not possible, use a browser/site access control (e.g., restrict access to untrusted web content) to reduce exposure to a crafted HTML page that could trigger this issue after the renderer process is compromised.
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-6296
- CVE-2026-6297
- CVE-2026-6298
- CVE-2026-6299
- CVE-2026-6358
- CVE-2026-6359
- CVE-2026-6300
- CVE-2026-6301
- CVE-2026-6302
- CVE-2026-6303
- CVE-2026-6304
- CVE-2026-6305
- CVE-2026-6306
- CVE-2026-6307
- CVE-2026-6308
- CVE-2026-6309
- CVE-2026-6360
- CVE-2026-6310
- CVE-2026-6312
- CVE-2026-6313
- CVE-2026-6314
- CVE-2026-6315
- CVE-2026-6316
- CVE-2026-6361
- CVE-2026-6362
- CVE-2026-6317
- CVE-2026-6363
- CVE-2026-6318
- CVE-2026-6319
- CVE-2026-6364
Frequently Asked Questions
What is the severity of CVE-2026-6311?
CVE-2026-6311 has been classified with a high severity rating as it involves uninitialized use in Chromium's accessibility features.
How do I fix CVE-2026-6311?
To fix CVE-2026-6311, update Google Chrome to version 147.0.7727.101 or newer and Microsoft Edge (Chromium-based) to the latest version available.
Which versions of Chrome are affected by CVE-2026-6311?
CVE-2026-6311 affects Google Chrome versions prior to 147.0.7727.101.
Is Microsoft Edge affected by CVE-2026-6311?
Yes, Microsoft Edge (the Chromium-based version) is affected but it receives updates that address this vulnerability.
What is uninitialized use in CVE-2026-6311?
Uninitialized use in CVE-2026-6311 refers to a situation where memory locations are used without being initialized, which could lead to unpredictable behavior or security risks.