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high·Product Based Web Vulnerabilities·Updated Jan 7, 2024

CVE-2016-4437 Scanner

Detects 'Remote Code Execution (RCE)' vulnerability in Apache Shiro affects v. before 1.2.5.

Est. Time~10 seconds
Scan TypeSingle Scan
Targetsdomain, ipv4, subdomain
CostFree
3.4k
Times Used
continuous scan runs
3.4k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
🔴
CISA Known Exploited Vulnerability
This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.
CVECVE-2016-4437
9.8
CVSScritical
Exploitable remotely over the internet · no authentication required.

Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember me" feature, allows remote attackers to execute arbitrary code or bypass intended access restrictions via an unspecified request parameter.

Attack Vector
Network
Privileges Req.
None
User Interaction
None
Affected
n/aby n/a
n/a
Updated Aug 22, 2026View on NVD →
Detail

Apache Shiro is an open-source Java security framework that provides powerful authentication, authorization, and cryptography capabilities for web applications and other software systems. It allows developers to easily integrate essential security features into their projects, ensuring that they can protect sensitive data and resources from unauthorized access, manipulation, and theft.

CVE-2016-4437 is a critical vulnerability that was discovered in Apache Shiro before version 1.2.5. This vulnerability was caused by a flaw in the "remember me" feature of the framework, which could be exploited by remote attackers to execute arbitrary code or bypass intended access restrictions by sending a specially crafted request parameter.

When exploited, this vulnerability can give cybercriminals unauthorized access to sensitive data, such as login credentials, personal information, and financial records. This can lead to serious consequences, including identity theft, fraud, financial loss, and reputational damage. Moreover, the exploited vulnerability can provide a backdoor for attackers to conduct further attacks, such as phishing, malware deployment, and DDoS attacks.

Thanks to the pro features of the s4e.io platform, you can easily and quickly learn about vulnerabilities in your digital assets. Our platform provides real-time information about the latest vulnerabilities, exploits, and attack vectors, as well as actionable insights and recommendations for remediation. With s4e.io, you can stay ahead of the curve and protect your assets from cyber threats.

 

REFERENCES

Solution Advice

To protect against this vulnerability, Apache Shiro users can take the following precautions:

  • Upgrade to a newer version of the framework that contains a fix for CVE-2016-4437.
  • Configure a secure cipher key for the "remember me" feature to prevent arbitrary code execution and access bypassing.
  • Implement additional security measures, such as input validation, output encoding, and access control, to mitigate other vulnerabilities that may exist in the software system.
  • Use security scanners and tools to continuously monitor the software system for vulnerabilities and threats.
  • Educate developers, administrators, and users about the importance of security and the risks posed by vulnerabilities like CVE-2016-4437.

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