Insecure Deserialization: A Growing Threat

Published on August 18, 2025 | Source: https://www.contrastsecurity.com/security-influencers/insecure-deserialization-trend-march-attack-data-contrast-security?utm_source=openai

Insecure deserialization has emerged as a prominent threat in the cybersecurity landscape. This vulnerability occurs when an application deserializes untrusted data without proper validation, allowing attackers to execute arbitrary code remotely. Recent data indicates a surge in such attacks; for instance, in March 2025, applications monitored by Contrast Security experienced an average of 28 insecure deserialization attacks per app. This trend underscores the critical need for robust security measures to address this escalating issue. contrastsecurity.com

The impact of insecure deserialization is profound, as demonstrated by the CVE-2025-53770 vulnerability in Microsoft SharePoint Server. This flaw, identified in July 2025, allows unauthenticated attackers to execute arbitrary code remotely, potentially compromising entire systems. Such incidents highlight the importance of implementing secure coding practices, including strict input validation and the use of safe serialization formats, to mitigate the risks associated with insecure deserialization. ionix.io

Key Takeaways:

• 🌀 Insecure deserialization vulnerabilities are increasing, posing significant security risks.
• 🌀 Recent incidents, like CVE-2025-53770 in SharePoint, demonstrate the severity of these vulnerabilities.
• 🌀 Implementing secure coding practices and input validation is crucial to mitigate these risks.
• 🌀 Using safe serialization formats can help prevent exploitation of deserialization flaws.
• 🌀 Regular security audits and updates are essential to protect applications from evolving threats.