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CVE-2016-4437

Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember me" feature, allows remote attackers to execute…

Critical9.8Known exploitedEPSS 93.0%
Published
Updated
Reserved
Assigned by
redhat

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.

Exploited in the wild

CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Apache Shiro Code Execution Vulnerability.

Added
3 Nov 2021
Fix due (US federal)
3 May 2022
Used by ransomware
Not known

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Scores

CVSS scores of CVE-2016-4437, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Analyzed3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
93.0% · top 0.2% of all CVEs (2 Nov 2026)
CISA SSVC
Exploitation: active · Automatable: yes · Technical impact: total

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

  • n/a

    • affected n/a

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (8)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .