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PatchSiren cyber security CVE debrief

CVE-2026-51990 Sogou CVE debrief

A critical vulnerability was found in Sogou Input Method version less than 16.3.0.3498. This issue allows remote attackers to execute arbitrary code via the biz_helper.exe component. The vulnerability has a CVSS score of 9.8 and is considered critical. Defenders responsible for managing and updating Sogou Input Method installations should assess exposure and prioritize updates to prevent potential code execution attacks. The CVE record and NVD vulnerability detail page provide information about the vulnerability, including its CVSS score and affected version.

Vendor
Sogou
Product
Sogou Input Method
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-16
Original CVE updated
2026-09-22
Advisory published
2026-09-16
Advisory updated
2026-09-22

Who should care

Defenders responsible for managing and updating Sogou Input Method installations should assess exposure and prioritize updates to prevent potential code execution attacks.

Why it matters

CVE-2026-51990 is a critical vulnerability in Sogou Input Method that allows remote code execution. Defenders should assess exposure, prioritize updates, and verify version information to prevent potential attacks.

  • Remote code execution is possible, requiring immediate attention to update affected systems
  • Verification of Sogou Input Method version is necessary to determine exposure
  • Updating to version 16.3.0.3498 or later is required to remediate the vulnerability

Technical summary

The vulnerability is caused by an issue in Sogou Input Method version less than 16.3.0.3498, which allows remote attackers to execute arbitrary code via the biz_helper.exe component. This issue requires immediate attention to update Sogou Input Method to version 16.3.0.3498 or later to prevent potential code execution attacks. Verification of Sogou Input Method version is necessary to determine exposure.

Defensive priority

Immediate attention is required to update Sogou Input Method to version 16.3.0.3498 or later to prevent potential code execution attacks.

Recommended defensive actions

  • Update Sogou Input Method to version 16.3.0.3498 or later
  • Verify the version of Sogou Input Method in use and apply updates if necessary
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD vulnerability detail page provide information about the vulnerability, including its CVSS score and affected version. The vulnerability is caused by an issue in Sogou Input Method version less than 16.3.0.3498, which allows remote attackers to execute arbitrary code via the biz_helper.exe component. The official CVE Program record and NVD detail page provide source-provided CVE metadata and vulnerability assessment. The Sogou Input Method version should be 16.3.0

Sources and references

Verified primary and authoritative sources

  • CVE-2026-51990 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-51990

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-51990 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-51990

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.