What is CWE-347?
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
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CWE-347: Improper Verification of Cryptographic Signature
Data statistics
OWASP TOP 10:2025 RANK4 — A04:2025 — Cryptographic Failures
RELATED CVES (365 DAYS)140
ABSTRACTIONBase
Vulnerabilities mapped to CWE-347
140 vulnerabilities400% increase year over year
Vulnerabilities in CISA KEV for CWE-347
1 vulnerabilities
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Characteristics
Modes of introduction
- Architecture and Design
- Implementation: REALIZATION: This weakness is caused during implementation of an architectural security tactic.
Common consequences
| Impact | Scope | Explanation |
|---|---|---|
| Gain Privileges or Assume Identity, Modify Application Data, Execute Unauthorized Code or Commands | Access Control, Integrity, Confidentiality | An attacker could gain access to sensitive data and possibly execute unauthorized code. |
Detection methods
| Method | Approach | Effectiveness |
|---|---|---|
| Automated Static Analysis | Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.) | High |
Representative vulnerabilities
Below are representative vulnerabilities related to this CWE, prioritized by severity.
Sources (2)
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