Google Chrome received a security update for CVE-2026-3909, an out-of-bounds write flaw in the Skia graphics component, and CISA added the vulnerability to its Known Exploited Vulnerabilities (KEV) catalog. The issue affects Chrome desktop versions prior to 146.0.7680.80 on Windows, macOS, and Linux, and CISA’s KEV entry states the bug could allow a remote attacker to trigger out-of-bounds memory access through a crafted HTML page. The KEV record also notes that the vulnerable component is widely used and may affect ChromeOS, Android, Flutter, and other products depending on vendor implementation and patch status.
The available reporting indicates active exploitation awareness at the time of disclosure, elevating the issue from a routine browser patch to a priority remediation item. Canadian Centre for Cyber Security guidance directs administrators to review Google’s advisory and apply updates, while the KEV entry instructs organizations to follow vendor mitigations, comply with applicable BOD 22-01 requirements for cloud services, or discontinue use if no mitigation is available. Other advisories in the set cover unrelated vendor and ICS vulnerability bulletins and do not describe the same specific event.

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On 2026-03-16, the Canadian Centre for Cyber Security published advisory AV26-240 highlighting Google's Chrome update and CISA's KEV listing for CVE-2026-3909. It urged users and administrators to review the vendor guidance and apply updates or mitigations as available.
Also on 2026-03-13, CISA added CVE-2026-3909 to its Known Exploited Vulnerabilities catalog, indicating the flaw had been exploited in the wild. The KEV entry noted the vulnerability's broader downstream impact on products that rely on the Skia component, including Chrome, ChromeOS, Android, and Flutter.
On 2026-03-13, Google published a security advisory addressing CVE-2026-3909, an out-of-bounds write vulnerability in Skia affecting Chrome Stable for Desktop. The advisory covered Chrome versions prior to 146.0.7680.80 on Windows and Mac, and Linux version 146.0.7680.80.
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