Vulnerability Snapshot
This advisory is rated CRITICAL — exploitation is trivial or already observed in the wild and impact is severe. Patch immediately, not on the next maintenance window.
Affected technology: Firefox, chrome, firefox, edge.
Executive Summary
Editor’s note: The analysis is authored by Moises Cerqueira, malware researcher & threat hunter. You can find Moises on LinkedIn and X. Fake tax documents are being used to target organizations across LATAM, delivering a custom HVNC backdoor built for stealthy, persistent access. Once installed, the malware can give attackers hidden remote control, steal browser […] The post HVNC Backdoor Targets LATAM Organizations with Fake Tax and DocuSign Lures appeared first on ANY.RUN's Cybersecurity Blog.
Source
AI Security Advisor
Powered by Gemini
Get AI-powered security recommendations tailored to this specific threat — including risk assessment, detection guidance, MITRE ATT&CK mapping, and actionable remediation steps.
Affected Products
Sources
Related Threat Alerts
- Microsoft September 2026 Patch Tuesday fixes 966 flaws, 2 zero-days
- CVE-2026-77898 Microsoft Office Remote Code Execution Vulnerability
- CVE-2026-68786 Microsoft SQL Server Remote Code Execution Vulnerability
- CVE-2026-68787 Microsoft SQL Server Remote Code Execution Vulnerability
- CVE-2026-69271 Microsoft Standard XPS Elevation of Privilege Vulnerability
- CVE-2026-67643 Microsoft SQL Server Remote Code Execution Vulnerability
Frequently Asked Questions
What is "HVNC Backdoor Targets LATAM Organizations with Fake Tax and DocuSign Lures"?
This is a critical-severity osint alert from ANY.RUN Cybersecurity Blog. It covers Firefox, chrome, firefox, edge and was flagged for security teams to evaluate.
Am I affected?
Check whether your environment runs Firefox, chrome, firefox, edge. If you operate any of those, treat yourself as in scope until you have evidence otherwise. A Vulnios scan will identify the exact assets carrying the affected version.
How urgent is the response?
Critical: do not wait for your normal patch cycle. Verify exposure today, apply the vendor patch immediately, and add detection rules for any post-exploit indicators.
How do I remediate?
Apply the vendor patch listed in the upstream advisory linked under Sources. If the patch is not yet available, follow the vendor-supplied workaround (often a config flag or feature disable) and add detections for the published exploit pattern in your SIEM. Re-scan after the patch lands to confirm the finding clears.
How does Vulnios help with this?
Vulnios continuously cross-references your asset inventory against the live CVE feed (NVD, vendor advisories, CISA KEV, and curated OSINT). When a new CVE matches your environment, you get a prioritized finding with the severity, KEV status, exploit-prediction (EPSS), and a direct path to the vendor patch. You can start a free scan from the homepage.
Protect Your Organization
Monitor CVEs, scan for vulnerabilities, and get real-time threat alerts — all in one platform.
Weekly threat digest
KEV-listed exploits and vendor advisories, every Monday.
One email a week. Unsubscribe any time.
Get instant alerts on Telegram
Join our public channel for real-time critical CVE alerts.
Follow @vulnios