CVE-2021-20837

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

October 8, 2026

Last Seen

October 8, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

—

Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Surge in Cyber Incidents Targeting Japanese Web Systems69.5

As of October 6, 2026, Japan has reported 119 incidents of information leakage from corporate web systems, a significant increase since July 2026. This surge, accounting for 68% of the year's reported incidents, raises concerns among security experts due to its unusual nature compared to past cybera...