CVE-2019-20918

Name: CVE-2019-20918
Creator: NVD / NIST
Published: 2020-09-11T05:15:12.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.49%

Last modified Jun 17, 2026

CVE-2019-20918 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in InspIRCd 3 before 3.1.0. The silence module contains a use after free vulnerability. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.49%

70.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Inspircd	Inspircd	>= 3.0, < 3.1.0

References

https://docs.inspircd.org/security/2019-01/Vendor Advisory
https://github.com/inspircd/inspircd/commit/7b47de3c194f239c5fea09a0e49696c9af017d51Patch, Third Party Advisory
https://github.com/inspircd/inspircd/commit/bcd65de1ec4bb71591ae417fee649d7ecd37cd57Patch, Third Party Advisory
https://docs.inspircd.org/security/2019-01/Vendor Advisory
https://github.com/inspircd/inspircd/commit/7b47de3c194f239c5fea09a0e49696c9af017d51Patch, Third Party Advisory
https://github.com/inspircd/inspircd/commit/bcd65de1ec4bb71591ae417fee649d7ecd37cd57Patch, Third Party Advisory

Timeline

Published: Sep 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20918?

How severe is CVE-2019-20918?

CVE-2019-20918 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20918?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20918?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST