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CWE-491

Public cloneable() Method Without Final ('Object Hijack')

A class has a cloneable() method that is not declared final, which allows an object to be created without calling the constructor. This can cause the object to be in an unexpected state.

4
Assigned CVEs
563rd
Commonality Rank
8.2
Avg CVSS
0.0%
In CISA KEV

Volume and Severity of Assigned CVEs Over Time

Volume of CVEs assigned to CWE-491 and their average CVSS base score over time.

Volume of CVEsAvg CVSS Base Score
First CVE
Jul 9, 2024
2 years ago
Most Recent CVE
Nov 20, 2025
246 days ago

Top CVEs Assigned This CWE

Top CVEs that have been assigned this CWE. A single CVE can have multiple CWE assignments, though many have just one.

4 CVEs · Highest risk first

CVEPublishedCVSSRiskKEVExploit
CVE-2025-63685CRITICAL
Quark Cloud Drive v3.23.2 has a DLL Hijacking vulnerability. This vulnerability stems from the insecure loading of system libraries. Specifically, the application does not validate
Nov 20, 20259.831NONO
CVE-2025-60425HIGH
Nagios Fusion v2024R1.2 and v2024R2 does not invalidate already existing session tokens when the two-factor authentication mechanism is enabled, allowing attackers to perform a ses
Oct 27, 20258.627NONO
CVE-2025-55622MEDIUM
Reolink v4.54.0.4.20250526 was discovered to contain a task hijacking vulnerability due to inappropriate taskAffinity settings. NOTE: this is disputed by the Supplier because it is
Aug 22, 20256.522NONO
CVE-2024-39069HIGH
An issue in ifood Order Manager v3.35.5 'Gestor de Peddios.exe' allows attackers to execute arbitrary code via a DLL hijacking attack.
Jul 9, 20247.821NONO
View all 4 CVEs →

CVE Severity & Scoring

This CWEGlobal (All CVEs)
0.0-0.9
1.0-1.9
2.0-2.9
3.0-3.9
10%
4.0-4.9
19%
5.0-5.9
25%
16%
6.0-6.9
25%
26%
7.0-7.9
25%
11%
8.0-8.9
25%
14%
9.0-10.0
unknown
CVSS Score Range

Exploit Exposure

Exploit activity across CVEs assigned to this CWE, including CVEs that carry other CWE assignments.

CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%

Social Chatter

Social posts that mention CVE IDs assigned to this CWE. This is assigned-CVE activity, not mentions of the CWE label itself.

Media Mentions

Media articles that mention CVE IDs assigned to this CWE. This is assigned-CVE coverage, not mentions of the CWE label itself.

Top Affected Vendors

Top Affected Products