The product utilizes a shared resource in a concurrent manner, but it does not correctly synchronize access to the resource.
View on MITREIf access to a shared resource is not correctly synchronized, then the resource may not be in a state that is expected by the product. This might lead to unexpected or insecure behaviors, especially if an attacker can influence the shared resource.
No mitigation information available for this CWE.
No detection method information available for this CWE.
No examples or observed CVEs available for this CWE.
No relationship information available for this CWE.
CWE-821: Incorrect Synchronization is a Common Weakness Enumeration (CWE) entry maintained by MITRE. The product utilizes a shared resource in a concurrent manner, but it does not correctly synchronize access to the resource. If access to a shared resource is not correctly synchronized, then the resource may not be in a state that is expected by the product. This might lead to unexpected or insecure behaviors, especially if an attacker can influence the shared resource.
If exploited, CWE-821 (Incorrect Synchronization) it can compromise Integrity, Confidentiality and Other, leading to outcomes such as Modify Application Data, Read Application Data and Alter Execution Logic.
A CWE (Common Weakness Enumeration) like CWE-821 describes a category of software weakness — the underlying flaw type. A CVE (Common Vulnerabilities and Exposures) identifies a specific, real-world vulnerability in a particular product. In short, a CWE is the kind of mistake, and a CVE is an instance of that mistake being found in software.