Zero-Day Weaponization in Latin America: A Rising Threat

Introduction

In recent years, Latin America has witnessed a surge in cybercriminal activities, particularly involving the exploitation of zero-day vulnerabilities. These previously unknown flaws in software systems are being weaponized by cybercriminals, leading to significant security breaches and financial losses across the region.

The Rise of Zero-Day Exploitation

Zero-day vulnerabilities are flaws in software that are unknown to the vendor and have no available patch. Cybercriminals exploit these vulnerabilities to gain unauthorized access to systems, often before the vendor becomes aware of the issue. The exploitation of such vulnerabilities has been on the rise globally, with a 50% increase in zero-day exploits observed in 2023 compared to the previous year. (thecyberpost.com)

Notable Incidents in Latin America

In May 2025, the North Korean-sponsored Lazarus group exploited a zero-day vulnerability (CVE-2025-3928) in Commvault's web server, compromising the cloud environment of the company 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 April 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 market for zero-day vulnerabilities has evolved, with exploit brokers acting as intermediaries between vulnerability discoverers and potential buyers. These brokers often sell exploits to the highest bidder, including nation-states and cybercriminal organizations. For instance, in March 2025, a Russian exploit broker offered up to $4 million for zero-day exploits targeting the Telegram messaging app. (techcrunch.com)

Impact on Latin America

The exploitation of zero-day vulnerabilities in Latin America has led to significant financial losses and operational disruptions. Brazil, for example, has been the most targeted country in the region for three consecutive years, with 61 cyberattacks recorded in 2023 alone. (tiinside.com.br)

Conclusion

The weaponization of zero-day vulnerabilities by cybercriminals poses a growing threat to Latin America. Organizations in the region must prioritize cybersecurity measures, including regular software updates, employee training, and the implementation of robust security protocols, to mitigate the risks associated with these sophisticated attacks.

Highlights:

• Russian zero-day seller is offering up to $4 million for Telegram exploits | TechCrunch, Published on Thursday, March 20
• Zero-days exploited in the wild jumped 50% in 2023, fueled by spyware vendors - The Cyber Post, Published on Tuesday, March 26
• Telegram Zero-Day App Attack Worth $4 Million Says Russian Broker, Published on Friday, March 21