the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register   Reset Password   Activate Account
Vulnerability Feeds & WidgetsNew  

CWE - 754 : Improper Check for Unusual or Exceptional Conditions

CWE Definition
Number of vulnerabilities: 0
Description The software does not check or improperly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software.The programmer may assume that certain events or conditions will never occur or do not need to be worried about, such as low memory conditions, lack of access to resources due to restrictive permissions, or misbehaving clients or components. However, attackers may intentionally trigger these unusual conditions which thus violating the programmer's assumptions, possibly introducing instability, incorrect behavior, or a vulnerability.
Background Details Many functions will return some value about the success of their actions. This will alert the program whether or not to handle any errors caused by that function.
Other Notes

Warning! CWE definitions are provided as a quick reference. They are not complete and may not be up to date!
You must visit for a complete list of CWE entries and for more details.
CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.