CWE-354: Improper Validation of Integrity Check Value
The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.
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Overview
Improper validation of checksums before use results in an unnecessary risk that can easily be mitigated. The protocol specification describes the algorithm used for calculating the checksum. It is then a simple matter of implementing the calculation and verifying that the calculated checksum and the received checksum match. Improper verification of the calculated checksum and the received checksum can lead to far greater consequences.
Real-world CVEs
95 recorded CVEs are caused by CWE-354 (Improper Validation of Integrity Check Value). The highest-severity and most recent are shown first. 24 new CWE-354 CVEs have been recorded so far in 2026 (17 in 2025).