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Home/CWEs/CWE-200
Common Weakness Enumeration

CWE-200: Exposure of Sensitive Information

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The product exposes information to actors not authorized to see it.

Abstraction
Class
OWASP Top 10
A02:2021 (#2)
Exploit Likelihood
Medium
Related CVEs
100

How to mitigate

Minimize data in responses, logs, and errors; classify data and audit every egress path.

▪ References & documentation

https://cwe.mitre.org/data/definitions/200.htmlNVD CWE listing

▪ How attackers exploit CWE-200

MITRE ATT&CK techniques associated with this weakness class (mapped via MITRE CAPEC). A vulnerability of this type could let an adversary carry out:

T1007System Service DiscoverydiscoveryT1016System Network Configuration DiscoverydiscoveryT1018Remote System DiscoverydiscoveryT1027Obfuscated Files or InformationstealthT1033System Owner/User DiscoverydiscoveryT1036Masqueradingstealth

Step-by-step: how CWE-200 gets exploited

A stage-by-stage walkthrough of the attack, mapped to the real MITRE ATT&CK tactics for this weakness — what the attacker is trying to do, what's at risk (what can be stolen or damaged), and how you defend. Understanding the playbook is how you shut it down.

  1. 1
    Reconnaissancereconnaissance

    Study the target to find the weakness before touching it.

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Security vulnerability in air

T1046Network Service Discoverydiscovery
T1049System Network Connections Discoverydiscovery
T1057Process Discoverydiscovery
T1069Permission Groups Discoverydiscovery
T1082System Information Discoverydiscovery
T1083File and Directory Discoverydiscovery
T1087Account Discoverydiscovery
T1111Multi-Factor Authentication Interceptioncredential-access
T1120Peripheral Device Discoverydiscovery
T1124System Time Discoverydiscovery
T1134Access Token Manipulationstealth · privilege-escalation
T1135Network Share Discoverydiscovery
T1185Browser Session Hijackingcollection
T1217Browser Information Discoverydiscovery
T1550Use Alternate Authentication Materiallateral-movement
T1562Impair Defensesstealth
T1563Remote Service Session Hijackinglateral-movement
T1574Hijack Execution Flowstealth · execution
T1590Gather Victim Network Informationreconnaissance
T1592Gather Victim Host Informationreconnaissance
T1595Active Scanningreconnaissance
T1606Forge Web Credentialscredential-access
T1615Group Policy Discoverydiscovery
At risk / what's stolen

Exposed version info, error messages, and endpoints that reveal the vulnerable component.

How you defend

Minimise information disclosure; hide version banners and verbose errors.

  • 2
    Executionexecution

    Run attacker-chosen code or commands on the system.

    At risk / what's stolen

    Application logic and the host runtime — an attacker can execute arbitrary code or commands.

    How you defend

    Least-privilege runtime, sandboxing, and safe deserialization/parsing.

  • 3
    Privilege escalationprivilege-escalation

    Gain higher privileges — from a limited account to admin/root.

    At risk / what's stolen

    Over-permissioned services, weak file/permission boundaries, and setuid paths.

    How you defend

    Drop privileges, enforce least privilege, and lock down file permissions.

  • 4
    Credential accesscredential-access

    Steal passwords, tokens, keys, and session material.

    At risk / what's stolen

    Passwords, API keys, session tokens, SSH/TLS keys, and secrets in memory, env, or config.

    How you defend

    Secret managers, short-lived tokens, and no secrets in code/env/logs.

  • 5
    Discoverydiscovery

    Map what else is reachable — hosts, services, data stores, and accounts.

    At risk / what's stolen

    Internal topology, service inventory, and data locations the attacker enumerates.

    How you defend

    Network segmentation and detection of unusual internal scanning.

  • 6
    Lateral movementlateral-movement

    Pivot from the compromised system to others on the network.

    At risk / what's stolen

    Adjacent servers, databases, and internal services reachable from the foothold.

    How you defend

    Segmentation, per-service auth, and blocking reused credentials across systems.

  • 7
    Collectioncollection

    Gather the valuable data before taking it out.

    At risk / what's stolen

    Databases, files, customer records, source code, and business data.

    How you defend

    Data-access monitoring, encryption at rest, and least-privilege data access.

  • This is a defensive, conceptual walkthrough for education — stages reflect MITRE ATT&CK tactics associated with this weakness class, not a working exploit. Not every attack uses every stage.

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