CVE-2015-1793 is a vulnerability in the Apache Commons library, which is used by many Java applications. This vulnerability allows an attacker to execute arbitrary code on a target system by exploiting a flaw in the library's deserialization process. Specifically, an attacker can exploit this vulnerability by sending a maliciously crafted object to a vulnerable application that uses the affected library.
The vulnerability was first discovered and publicly disclosed in July 2015. Shortly after the disclosure, several proof-of-concept exploits were released, demonstrating the severity of the vulnerability. Because many Java applications use the Apache Commons library, this vulnerability posed a significant risk to organizations that rely on Java-based software.
To mitigate the risk of exploitation, users were advised to update their Apache Commons library to a non-vulnerable version as soon as possible. Additionally, users were advised to monitor their systems for any signs of exploitation and to take immediate action if suspicious activity was detected. While there were no known instances of this vulnerability being exploited in the wild, the potential impact of a successful attack made it a serious concern for many organizations.