CWE-691: Insufficient Control Flow Management
The code does not sufficiently manage its control flow during execution, creating conditions in which the control flow can be modified in unexpected ways.
How it's found
Insufficient Control Flow Management is a broad weakness category rather than one exact bug. Testers narrow it down through manual code review and architecture review to identify which of its more specific child weaknesses actually appears in a given target, then confirm each one individually.
Vulnerable vs. safe
/* access shared resource */pthread_mutex_lock(mutex);pthread_mutex_unlock(mutex);void f(pthread_mutex_t *mutex) {}return result;/* access shared resource */int result;result = pthread_mutex_lock(mutex);if (0 != result)return pthread_mutex_unlock(mutex);int f(pthread_mutex_t *mutex) {}Consequences
- Alter Execution Logic
Where this fits in a TurboPentest engagement
This weakness is not covered by the automated black-box pentest. IntegSec pentesters cover it in a manual engagement.
Frequently asked questions
What is CWE-691?
The code does not sufficiently manage its control flow during execution, creating conditions in which the control flow can be modified in unexpected ways.
How do you find Insufficient Control Flow Management?
Insufficient Control Flow Management is a broad weakness category rather than one exact bug. Testers narrow it down through manual code review and architecture review to identify which of its more specific child weaknesses actually appears in a given target, then confirm each one individually.
What is the impact of CWE-691?
Alter Execution Logic
Does TurboPentest test for Insufficient Control Flow Management?
This weakness is not covered by the automated black-box pentest. IntegSec pentesters cover it in a manual engagement.
Written and reviewed by
Michel Chamberland - Founder & CEO, IntegSec
CISSP, OSCP, OSCE, CEH, GIAC, CCSK · 20+ years in offensive security
Michel has spent 20+ years on offensive security teams including IBM X-Force Red and Trustwave SpiderLabs, leading penetration tests, red team engagements, and breach response for Fortune 500 customers. He is the founder of IntegSec and the architect of TurboPentest.
Find these issues before an attacker does
TurboPentest runs an agentic AI pentest against your target and reports findings with proof, from $99 per target.
Start a pentest