What’s Vulnerable › Vulnerabilities

CVE-2019-20918

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-11 · updated 2026-06-17
• Weakness: CWE-416

Description

An issue was discovered in InspIRCd 3 before 3.1.0. The silence module contains a use after free vulnerability. This vulnerability can be used for remote crashing of an InspIRCd server by any user able to fully connect to a server.

Affected products

• Inspircd: from 3.0 before 3.1.0 — fixed in 3.1.0

How to fix

Upgrade to a fixed version: Inspircd 3.1.0. Check the vendor advisory for mitigations.

References

• https://docs.inspircd.org/security/2019-01/
• https://github.com/inspircd/inspircd/commit/7b47de3c194f239c5fea09a0e49696c9af017d51
• https://github.com/inspircd/inspircd/commit/bcd65de1ec4bb71591ae417fee649d7ecd37cd57
• https://docs.inspircd.org/security/2019-01/
• https://github.com/inspircd/inspircd/commit/7b47de3c194f239c5fea09a0e49696c9af017d51
• https://github.com/inspircd/inspircd/commit/bcd65de1ec4bb71591ae417fee649d7ecd37cd57

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