Is CVE-2026-9123 actively exploited?

No active exploitation of CVE-2026-9123 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-9123 be exploited remotely?

Partially. CVE-2026-9123 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2026-9123?

CVE-2026-9123 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2026-9123

CWE-122Published: May 20, 2026· Updated: May 21, 2026

7.5

CVSS v3.1

EPSS:0.00%probability of exploitation in 30 daysPercentile:0.1th

Official Description

Heap buffer overflow in Chromecast in Google Chrome on Android, Linux, ChromeOS prior to 148.0.7778.179 allowed a local attacker to execute arbitrary code inside a sandbox via malicious network traffic. (Chromium security severity: Medium)

NVD Source

Technical Analysis

CVE-2026-9123 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 7.5.