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CISA Known Exploited Vulnerability

This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.

CVE

CVE-2016-4437

9.8

CVSScritical

Exploitable remotely over the internet · no authentication required.

Description

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

Updated Oct 12, 2026View on NVD →

S4E scanner

highProduct Based Web Vulnerabilities~10 seconds

CVE-2016-4437 Scanner

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

Used 3.4k times · 3.4k assets checked · domain, ipv4, subdomain

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