CVE-2016-4437

critical

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.

References

http://rhn.redhat.com/errata/RHSA-2016-2036.html

http://rhn.redhat.com/errata/RHSA-2016-2035.html

http://packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html

https://thehackernews.com/2026/06/new-sharkloader-malware-deploys-cobalt.html

https://securelist.com/strikeshark-campaign/120326/

https://github.com/yomymy/CVE-Vuln-Records

https://github.com/1392081456/sigma-detection-rules

https://github.com/1392081456/ctf-notes

https://github.com/wyqsgy/vulnark

https://github.com/advisories/GHSA-p836-389h-j692

https://github.com/4nth0ny1130/shisoserial

https://github.com/XuCcc/VulEnv

https://github.com/bkfish/Awesome_shiro

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4437

https://lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3E

http://www.securityfocus.com/bid/91024

http://www.securityfocus.com/archive/1/538570/100/0/threaded

http://packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html

Details

Source: Mitre, NVD

Published: 2016-06-07

Updated: 2026-04-22

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.93039

Detections

Analytics