Loading vulnerability…
CVE-2026-51990 is a remote code execution vulnerability affecting Tencent Sogou Input Method for Windows before version 16.3.0.3498. The sg_process handler for the custom sgbiz protocol validates the requested component but fails to validate user-controlled command-line arguments. A crafted link can launch the configuration application's skin-marketplace webview and navigate it to an attacker-controlled destination without validating the URL scheme or destination. The observed exploit chain then exploits CVE-2021-38003 in the embedded Chromium 80 engine to execute arbitrary code. The embedded browser is generally described as running without sandboxing and with web-security protections disabled, although one account contradicts that configuration claim. UNC3569 actively exploited the vulnerability to deploy the GrayRabbit backdoor.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
64 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote arbitrary-code-execution vulnerability in the biz_helper.exe component of Sogou Input Method versions earlier than 16.3.0.3498.
A one-click remote-code-execution vulnerability chain in Sogou Input Method for Windows. Unsafe validation of protocol-handler command-line options allowed attackers to direct a Sogou component's embedded browser to an attacker-controlled page, leading to code execution as the signed-in user.
A vulnerability in Sogou Input Method's custom Windows protocol handling allows attacker-supplied command-line options to direct its embedded browser to a malicious page. Combined with an outdated, unsandboxed browser and a known V8 vulnerability, it enables one-click remote code execution with the signed-in user's permissions. UNC3569 actively used this chain to deploy GRAYRABBIT.
A critical one-click remote/system-level code-execution vulnerability in Tencent Sogou Input Method for Windows. The sgbiz protocol handler accepted unsanitized parameters that enabled command-line argument injection and arbitrary URL navigation; exploitation was compounded by an obsolete Chromium 80 engine with its sandbox and key browser protections disabled.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.