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CVE-2016-4437: Apache Shiro Code Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2016-4437
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Apache Shiro contains a vulnerability which may allow remote attackers to execute code or bypass intended access restrictions via an unspecified request parameter when a cipher key has not been configured for the "remember me" feature.

CSIRTS triage

vendor: Apacheproduct: ShiroRemote code execution
What
A vulnerability may allow remote code execution or access restriction bypass via an unspecified request parameter.
Who is affected
Deployments of Apache Shiro are affected.
Urgency
Remediation is urgent as the vulnerability is actively exploited and critical.
Action
Update to the latest version of Apache Shiro.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2016-4437

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2016-4437coverage & exploitation statusNVD · CVE.org

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