CWE-115: Misinterpretation of Input

BaseIncomplete

The product misinterprets an input, whether from an attacker or another product, in a security-relevant fashion.

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Technical Details

Structure
Simple
Vulnerability Mapping
ALLOWED

Applicable To

Languages
Not Language-Specific
Platforms

Source-backed guidance

Additional facts reviewed against primary or authoritative security sources.

Detect Misinterpretation of Input with Fuzzing

Documented detection approaches include Fuzzing; recorded impacts include Unexpected State; observed examples include CVE-2005-2225, and CVE-2001-0003. Use these source-defined anchors to turn CWE-115 into implementation, review, and verification checks for the affected component.

CWE-115: Misinterpretation of InputMITRE CWE

Prevent CWE-115 through an SSDF control plan

Use NIST SSDF practices to make prevention of CWE-115, Misinterpretation of Input, an explicit development outcome. Translate the CWE definition into security requirements and design constraints, choose safer implementation patterns and toolchain checks, and define acceptance evidence before release. Feed every confirmed occurrence back into the requirements, design review, and coding rules so the same root cause is removed across the product rather than patched in one location.

NIST SP 800-218 Secure Software Development FrameworkNational Institute of Standards and Technology

Triage CWE-115 against known exploitation evidence

Use CISA's Known Exploited Vulnerabilities catalog to test whether a vulnerability mapped to CWE-115, Misinterpretation of Input, has evidence of exploitation in the wild. Confirm the CVE-to-CWE root-cause mapping independently before attaching the example, then capture the affected product, required action, and remediation deadline. A missing KEV match is not evidence that the weakness is unexploited, and a KEV entry must not be generalized to every occurrence of this CWE.

Known Exploited Vulnerabilities CatalogCybersecurity and Infrastructure Security Agency

Apply precise root-cause mapping to CWE-115

Apply MITRE's full root-cause mapping guidance when using CWE-115, Misinterpretation of Input. Separate weakness language from attacker prerequisites and technical impact, check the entry's abstraction and vulnerability-mapping notes, and prefer the most specific Base or Variant supported by the evidence. Record the rejected alternatives and require an independent review before the mapping is used for remediation trends or program metrics.

CVE to CWE Root Cause Mapping GuidanceMITRE CWE

Validate CWE-115 with root-cause mapping checks

Apply MITRE's root-cause mapping quick tips to CWE-115, Misinterpretation of Input. Confirm the finding describes the causal weakness rather than an impact or attack pattern, compare the abstraction and mapping notes with plausible alternatives, and have a second reviewer challenge the selection. Preserve the evidence and reasoning so recurring defects can be measured against one consistent identifier.

CVE to CWE Root Cause Mapping Quick TipsMITRE CWE

Frequently Asked Questions

What is CWE-115: Misinterpretation of Input?+

CWE-115: Misinterpretation of Input is a Common Weakness Enumeration (CWE) entry maintained by MITRE. The product misinterprets an input, whether from an attacker or another product, in a security-relevant fashion.

What are the security consequences of Misinterpretation of Input?+

If exploited, CWE-115 (Misinterpretation of Input) it can compromise Integrity, leading to outcomes such as Unexpected State.

Which programming languages are affected by Misinterpretation of Input?+

CWE-115 commonly affects Not Language-Specific. Note that weaknesses are often language-agnostic patterns, so secure coding practices apply broadly.

What are real-world examples of Misinterpretation of Input?+

MITRE documents real CVEs mapped to CWE-115, including CVE-2005-2225 and CVE-2001-0003. You can look up the full details of each CVE, including CVSS scores and remediation guidance, on our CVE Lookup tool.

What is the difference between a CWE and a CVE?+

A CWE (Common Weakness Enumeration) like CWE-115 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.

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