Millions of Redis, MongoDB and LDAP Services Found Exposed Online

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Internet scan data from October 2026 shows roughly 3.2 million Redis and 1.9 million MongoDB services responding on public-facing ports, with about 1.1 million LDAP services also visible. The article notes that these counts reflect services that answered a scan, not whether they are authenticated, hold sensitive data, or are owned by the organization. Researchers attribute the pattern to misconfiguration, such as databases bound to all interfaces with weak or disabled authentication, rather than to a specific unpatched vulnerability. The exposure can lead to data disclosure, unauthorized writes, and in some cases command execution, so the authors argue such instances should be treated as potential host compromises. They recommend auditing exposed instances against asset registers, prioritizing those without authentication, and verifying bind addresses and network policy.

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