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CVE-2026-51990

See advisory•CRITICAL · CVSS 9.8• In the wild

What is CVE-2026-51990?

An issue in Sogou Sogou Input Method < 16.3.0.3498 (fixed in 16.3.0.3498) allows a remote attacker to execute arbitrary code via the biz_helper.exe component

CVSS9.8 CNA/ADP score via NVD 3.1

SeverityCRITICAL

Exploitation In the wild

EPSS1% · P61

Triage statusActive Exploit

ActionPatch within 48 hours

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWECWE-94

NVD published2026-09-16

NVD last modified2026-09-22

Timeline

2026-09-14First covered in a defend.network daily briefing
2026-09-16Published to the U.S. National Vulnerability Database (NVD)
2026-09-22NVD record last updated

Affected product

See advisory

References

Referenced in our briefings & reports

Check Point VPN & Tencent flaws in active exploitation; RubyGems RCE confirmed (2026-09-14)

Related vulnerabilities

CVE-2026-0322 – Palo Alto Networks PAN-OS (same weakness: CWE-94)
CVE-2026-18885 (same weakness: CWE-94)
CVE-2026-6876 (same weakness: CWE-94)
CVE-2026-60004 – Gitea (same weakness: CWE-94)
CVE-2026-72530 – TrueConf Server (same weakness: CWE-94)
CVE-2026-19478 – Gitlab (same weakness: CWE-94)

Browse all tracked CVEs in the defend.network CVE database →

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.