What’s Vulnerable › Vulnerabilities

CVE-2020-1887

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-13 · updated 2026-06-17
• Weakness: CWE-297

Description

Incorrect validation of the TLS SNI hostname in osquery versions after 2.9.0 and before 4.2.0 could allow an attacker to MITM osquery traffic in the absence of a configured root chain of trust.

Affected products

• osquery: from 2.9.0 (excl.) before 4.2.0 — fixed in 4.2.0

How to fix

Upgrade to a fixed version: osquery 4.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/osquery/osquery/pull/6197
• https://www.facebook.com/security/advisories/cve-2020-1887
• https://github.com/osquery/osquery/pull/6197
• https://www.facebook.com/security/advisories/cve-2020-1887

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