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Bidda Sovereign Intelligence · 10,065 Verified Nodes · 39 Sovereign Pillars

MITRE CAPEC-649: Adding a Space to a File Extension (Detailed Attack Pattern - Medium Severity)

MITRE CAPEC-649 (Adding a Space to a File Extension) is a detailed-level attack pattern in the MITRE Common Attack Pattern Enumeration and Classification.…

Compliance Node Overview

MITRE CAPEC-649 (Adding a Space to a File Extension) is a detailed-level attack pattern in the MITRE Common Attack Pattern Enumeration and Classification. An adversary adds a space character to the end of a file extension and takes advantage of an application that does not properly neutralize trailing special elements in file names. This extra space, which can be difficult for a user to notice, affects which default application is used to operate on the file and can be leveraged by the adversary to control execution. Likelihood of attack: Low. Typical severity: Medium. Maps to weaknesses CWE-46. Relates to MITRE ATT&CK T1036.006.

Pillar: Cybersecurity · Authority: MITRE Corporation · Version: 1.0.0 · Last updated: 2026-05-25

Primary source: https://capec.mitre.org/data/definitions/649.html

SHA-256 integrity: e0f25e75ac475210c67144d5e033b43918d773f6c17303cf05ebfbbbd7ee5fef

Primary Citations — 9 traced to source

MITRE CAPEC-649: Adding a Space to a File Extension (https://capec.mitre.org/data/definitions/649.html)
CWE-46: underlying weakness (http://cwe.mitre.org/data/definitions/46.html)

+ 7 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.

Access

Discovery (free): /api/v1/nodes/mitre-capec-capec-649-adding-a-space-to-a-file-extension.json — 6-field metadata
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Canonical URL: https://bidda.com/intelligence/mitre-capec-capec-649-adding-a-space-to-a-file-extension
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