Is CVE-2026-12449 actively exploited?

No active exploitation of CVE-2026-12449 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-12449 be exploited remotely?

No. CVE-2026-12449 requires local access to exploit.

What is the CVSS score of CVE-2026-12449?

CVE-2026-12449 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2026-12449

CWE-416Published: June 17, 2026· Updated: Jun 18, 2026

7.8

CVSS v3.1

Official Description

Use after free in Chromoting in Google Chrome on Windows prior to 149.0.7827.155 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: High)

NVD Source

Technical Analysis

CVE-2026-12449 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.