Zero-Day Weaponization: A Critical Threat to Latin America's Cybersecurity

In early 2026, Latin America has witnessed a significant surge in cybercriminal activities, particularly involving the exploitation of zero-day vulnerabilities. These previously unknown flaws in software are being weaponized by cybercriminals to infiltrate systems, steal sensitive data, and disrupt critical infrastructure.

Rise in Zero-Day Exploitation

Zero-day vulnerabilities are flaws in software that are unknown to the vendor and have not been patched, making them prime targets for exploitation. In 2023, the number of zero-day exploits in the wild increased by 50%, with 97 such vulnerabilities identified, up from 62 in 2022. (forbes.com) This trend has continued into 2026, with cybercriminals in Latin America increasingly leveraging these vulnerabilities to launch sophisticated attacks.

Notable Incidents in Latin America

In May 2025, North Korean-sponsored cybercriminals, attributed to the Lazarus group, exploited a zero-day vulnerability in Commvault's web server (CVE-2025-3928) to compromise the cloud environment of the company, which was hosted on Microsoft Azure. This attack targeted several Mexican government agencies, including the Tax Administration Service (SAT) and the Ministry of Finance of the State of Sonora. (ventasdeseguridad.com)

Additionally, in 2025, the Storm-2460 ransomware group exploited a zero-day vulnerability in Windows Common Log File System (CLFS) to extort money from victims in several countries, including Venezuela. (phishingforanswers.com)

Exploit Broker Transactions

The acquisition and sale of zero-day exploits have become a lucrative business for cybercriminals. In February 2026, the U.S. Department of the Treasury sanctioned Sergey Sergeyevich Zelenyuk and his company, Matrix LLC (doing business as Operation Zero), for their acquisition and distribution of cyber tools harmful to U.S. national security. Operation Zero had acquired at least eight proprietary cyber tools created for the exclusive use of the U.S. government, which were stolen from a U.S. company. (home.treasury.gov)

Impact on Latin American Cybersecurity

The weaponization of zero-day vulnerabilities poses a critical threat to Latin America's cybersecurity landscape. The region has become a prime target for cybercriminals due to its rapidly digitizing economies and often inadequate cybersecurity measures. In the first half of 2025, Colombia recorded over 7.1 billion cyberattacks, highlighting the severity of the threat. (techloy.com)

Recommendations

To mitigate the risks associated with zero-day vulnerabilities, organizations in Latin America should:

• Implement Robust Patch Management: Regularly update and patch systems to address known vulnerabilities.

• Enhance Threat Detection Capabilities: Deploy advanced monitoring tools to detect unusual activities indicative of exploitation attempts.

• Invest in Cybersecurity Training: Educate employees on recognizing phishing attempts and other social engineering tactics.

• Collaborate with International Partners: Engage with global cybersecurity organizations to share threat intelligence and best practices.

By proactively addressing these areas, organizations can strengthen their defenses against the evolving threat of zero-day weaponization in Latin America.