Trending
CVE-2016-4437

CVE detail

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 arbitrary code or bypass intended access restrictions via an unspecified request parameter.

CVSS 9.8 · CriticalBuzz score 25.0KEV listed

Buzz score

Why this CVE is surfacing

Buzz score total 25.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 0.0 · diversity 0.0 · KEV 25.0 · OTX 0.0 · PoC 0.0

Mention score

0.0

0 evidence mentions in the snapshot

Diversity score

0.0

0 sources across 0 categories

KEV score

25.0

Known exploited vulnerability present

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

0 source links · newest first

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2016-4437.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:apache:auroraSearch this product on Shodan
cpe:2.3:a:apache:shiroSearch this product on Shodan
cpe:2.3:a:redhat:fuseSearch this product on Shodan
cpe:2.3:a:redhat:jboss_middleware_text-only_advisoriesSearch this product on Shodan

Exact CVE query

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vuln:CVE-2016-4437Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Unavailable

Published

Jun 7, 2016

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

1 stored signals · KEV present · 0 OTX pulses

KEVKEV
- cwes: CWE-284
- dueDate: 2022-05-03
- knownRansomwareCampaignUse: Unknown
- notes: https://nvd.nist.gov/vuln/detail/CVE-2016-4437
- product: Shiro
- requiredAction: Apply updates per vendor instructions.
- shortDescription: Apache Shiro contains a vulnerability which may allow remote attackers to execute code or bypass intended access restrictions via an unspecified request parameter when a cipher key has not been configured for the "remember me" feature.
- vendorProject: Apache
- vulnerabilityName: Apache Shiro Code Execution Vulnerability
Observed Nov 3, 2021, 12:00 AM