---
title: "CVE-2026-51990: Sogou Sogou Input Method - Remote Code Execution"
description: "Sogou Sogou Input Method < 16.3.0.3498 contains a remote code execution caused by vulnerability in biz_helper.exe component, letting remote attackers execute arbitrary code, exploit requires no special conditions."
url: https://panop.io/threat-heartbeat/CVE-2026-51990/
---

# CVE-2026-51990 Sogou Sogou Input Method - Remote Code Execution

Sogou Sogou Input Method < 16.3.0.3498 contains a remote code execution caused by vulnerability in biz\_helper.exe component, letting remote attackers execute arbitrary code, exploit requires no special conditions.

CVSS base score 9.8 /10

Critical

CISA KEV

Exploited in the wild

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.93% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-51990)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

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

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-94](https://cwe.mitre.org/data/definitions/94.html)

## Vendor fix

Update to version 16.3.0.3498 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-51990](https://nvd.nist.gov/vuln/detail/CVE-2026-51990)
- [https://www.recordedfuture.com/blog/september-2026-cve-landscape](https://www.recordedfuture.com/blog/september-2026-cve-landscape)
- [https://www.gendigital.com/blog/insights/research/one-click-backdoor-sogou](https://www.gendigital.com/blog/insights/research/one-click-backdoor-sogou)
- [http://sogou.com](http://sogou.com/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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