CVE-2026-6311

Status: ModifiedHigh (8.3)—

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

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Base score: 8.3

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.33%
Percentile among all scored CVEs: 24
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1203 Exploitation for Client Executionexecution85 %
Primary impactT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Secondary impactT1059 Command and Scripting Interpreterexecution70 %

UI:R (requiere interacción usuario) y AV:N dicta T1203. La vulnerabilidad permite sandbox escape (T1068) tras comprometer renderer, permitiendo ejecución de código (T1059) con altos privilegios.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software Threat Intelligence Program Restrict Web-Based Content

Affected technologies (1)

Google — Chrome

CWEs

CWE-457
CWE-457

References

Raw JSON (NVD)

Show

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