CWE-834 is Excessive Iteration. The flaw arises when the product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed. The database currently holds 25 vulnerabilities mapped to CWE-834 and none of them are in the CISA Known Exploited Vulnerabilities catalog.
Analyzing data...
No vulnerability data in CISA KEV for CWE-834
The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.
If the iteration can be influenced by an attacker, this weakness could allow attackers to consume excessive resources such as CPU or memory. In many cases, a loop does not need to be infinite in order to cause enough resource consumption to adversely affect the product or its host system; it depends on the amount of resources consumed per iteration.
| Impact | Scope | Explanation |
|---|---|---|
| DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory), DoS: Amplification, DoS: Crash, Exit, or Restart | Availability | Excessive looping will cause unexpected consumption of resources, such as CPU cycles or memory. The product's operation may slow down, or cause a long time to respond. If limited resources such as memory are consumed for each iteration, the loop may eventually cause a crash or program exit due to exhaustion of resources, such as an out-of-memory error. |
| Method | Approach | Effectiveness |
|---|---|---|
| Dynamic Analysis with Manual Results Interpretation | According to SOAR [REF-1479], the following detection techniques may be useful: ``` Cost effective for partial coverage: ``` Fuzz Tester Framework-based Fuzzer Forced Path Execution | SOAR Partial |
| Manual Static Analysis - Source Code | According to SOAR [REF-1479], the following detection techniques may be useful: ``` Cost effective for partial coverage: ``` Focused Manual Spotcheck - Focused manual analysis of source Manual Source Code Review (not inspections) | SOAR Partial |
| Automated Static Analysis - Source Code | According to SOAR [REF-1479], the following detection techniques may be useful: ``` Highly cost effective: ``` Context-configured Source Code Weakness Analyzer | High |
| Architecture or Design Review | According to SOAR [REF-1479], the following detection techniques may be useful: ``` Highly cost effective: ``` Inspection (IEEE 1028 standard) (can apply to requirements, design, source code, etc.) | High |
Below are representative vulnerabilities related to this CWE, prioritized by severity.
CWE™ Program, operated by The MITRE Corporation. Copyright © 2006–2026, The MITRE Corporation. The MITRE Corporation hereby grants you a non-exclusive, royalty-free license to use CWE for research, development, and commercial purposes. CWE Terms of Use.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
Review CyStack's security rating and practical recommendations for websites and edge assets.
Explore cybersecurity research from our team of security specialists.
Browse practical cybersecurity knowledge across CyStack's articles and guides.
en
