Security readout for executives and security teams
CVE-2016-4437 affects Apache Shiro before 1.2.5 when the remember-me encryption key was not configured. A remote attacker could execute code or bypass access controls. Because CISA lists it in KEV, treat exposed legacy Shiro applications as urgent. Exposure is most likely in Java applications using Apache Shiro before 1.2.5, especially internet-facing applications with remember-me functionality enabled or default cryptographic configuration left unchanged. Immediate remediation is warranted for any exposed affected system. The vulnerability is old but still high-risk because exploitation is recognized by CISA and the impact can include full code execution or access-control bypass. Mitigation focus: Upgrade Apache Shiro to 1.2.5 or later where applicable.; Configure a unique remember-me cipher key if remember-me remains enabled.; Review vendor advisories for distribution-specific fixed packages..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2016-4437 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- [announcements@aurora.apache.org] 20171101 Apache Aurora information disclosure vulnerabilityCVE reference · mailing-list, x_refsource_MLIST
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4437CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Use of Hard-coded Cryptographic Key
Use of Hard-coded Cryptographic Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.