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Vulnerability record · CVE-2020-25269 · published 11 September 2020

CVE-2020-25269: Inspircd use after free vulnerability

Inspircd · Inspircd

An issue was discovered in InspIRCd 2 before 2.0.29 and 3 before 3.6.0. The pgsql module contains a use after free vulnerability. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.

6.5 CVSS 3.1 Medium EPSS 2.7% · top 14.7% CWE-416 · Use after free
6.5CVSS 3.1 base score, v2 6.8
2.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in InspIRCd 2 before 2.0.29 and 3 before 3.6.0. The pgsql module contains a use after free vulnerability. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.inspircd.org/security/2020-01/ Vendor Advisory
https://github.com/inspircd/inspircd/compare/426d1c8...b3f1db9 PatchThird Party Advisory
https://github.com/inspircd/inspircd/compare/v2.0.28...07d7dea PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html Mailing ListThird Party Advisory
https://www.debian.org/security/2020/dsa-4764 Third Party Advisory
https://docs.inspircd.org/security/2020-01/ Vendor Advisory
https://github.com/inspircd/inspircd/compare/426d1c8...b3f1db9 PatchThird Party Advisory
https://github.com/inspircd/inspircd/compare/v2.0.28...07d7dea PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html Mailing ListThird Party Advisory
https://www.debian.org/security/2020/dsa-4764 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-25269), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.