What’s Vulnerable › Vulnerabilities

CVE-2018-4059

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-03-21 · updated 2026-06-17
• Weakness: CWE-862

Description

An exploitable unsafe default configuration vulnerability exists in the TURN server function of coTURN prior to version 4.5.0.9. By default, the TURN server runs an unauthenticated telnet admin portal on the loopback interface. This can provide administrator access to the TURN server configuration, which can lead to additional attacks. An attacker who can get access to the telnet port can gain administrator access to the TURN server.

Affected products

• coturn: before 4.5.0.9 — fixed in 4.5.0.9

How to fix

Upgrade to a fixed version: coturn 4.5.0.9. Check the vendor advisory for mitigations.

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0733
• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0733

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