Home/CWE/Improper Check or Handling of Exceptional Conditions
Weakness

Improper Check or Handling of Exceptional Conditions

CWE-703 · Pillar · Incomplete

The product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product.

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Weakness Relationships

Where this weakness sits in the CWE hierarchy. Walk up to broader classes or down to more specific variants.
Children (more specific)
ParentOfCWE-1384 · Improper Handling of Physical or Environmental Conditions
ParentOfCWE-228 · Improper Handling of Syntactically Invalid Structure
ParentOfCWE-248 · Uncaught Exception
ParentOfCWE-391 · Unchecked Error Condition
ParentOfCWE-392 · Missing Report of Error Condition
ParentOfCWE-393 · Return of Wrong Status Code
ParentOfCWE-397 · Declaration of Throws for Generic Exception
ParentOfCWE-754 · Improper Check for Unusual or Exceptional Conditions
ParentOfCWE-755 · Improper Handling of Exceptional Conditions
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CVEs With This Weakness

146
A sample of the 146 CVEs tagged with this weakness.
CVECVE-2026-34388
CVECVE-2026-31794
CVECVE-2026-31793
CVECVE-2026-29643
CVECVE-2026-28407
CVECVE-2026-21895
CVECVE-2026-21720
CVECVE-2026-21493
CVECVE-2026-20640
CVECVE-2026-1996
CVECVE-2026-0011
CVECVE-2025-70758
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