Weaknesses in the 2019 CWE Top 25 Most Dangerous Software Errors

The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the...

The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

The product does not validate, or incorrectly validates, a certificate.

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralize...

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process th...

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but ...

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes...

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralize...

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product ...

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the o...

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

The product reads data past the end, or before the beginning, of the intended buffer.

The product writes data past the end, or before the beginning, of the intended buffer.

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, ev...

The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.

The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to exter...