CISA KEV · Known exploitedCritical

CVE-2016-4437

Apache Shiro

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.

CVSS
9.8
EPSS
93.0%
99.8% percentile
CISA KEV
Listed
Published
2016.06.07
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability93.0%
Technical severityCVSS 9.8

Vulnerability overview

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.

Affected product and versions

Product
Apache Shiro
Affected versions
>= 0.10.0 < 0.18.1, < 1.2.5, 1.0
Fixed versions
0.18.1, 1.2.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03
  1. 1
    Identify

    Confirm that Apache Shiro and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-284, CWE-321
KEV added
2021.11.03
Ransomware use
미확인
CVE-2016-4437 — Apache Shiro | SECUFOCUS NOW