🛡️ CVE-2016-4437 — shiro-core

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-284 OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Improper Access Control in 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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2016-4437 is classified as CWE-284: Improper Access Control. The software does not restrict an action to the actors that should be allowed to perform it.

Affected software

CVE-2016-4437 is recorded against 1 package.

  • org.apache.shiro:shiro-core (fixed in 1.2.5)

Timeline and source

Published on 14 May 2022 and last revised on 22 October 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
lists.apache.org (Web)
lists.apache.org (Web)
www.cisa.gov (Web)
packetstormsecurity.com (Web)
packetstormsecurity.com (Web)
rhn.redhat.com (Web)
rhn.redhat.com (Web)
www.securityfocus.com (Web)
www.securityfocus.com (Web)

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H
CWE CWE-284
Public Exploit ✅ No
Source OSV
Published 2022-05-14
Updated 2026-08-12
Modified 2025-10-22
Fix URL N/A

Affected Packages

Software From version Fixed in
org.apache.shiro:shiro-core — 1.2.5

References

Similar Threats

Exploit Protection

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