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Vulnerability record · CVE-2020-25709 · published 18 May 2021

CVE-2020-25709: Openldap vulnerability

Openldap · Openldap

A flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.

7.5 CVSS 3.1 High EPSS 2.9% · top 13.8% CWE-617 · CWE-617
7.5CVSS 3.1 base score, v2 5.0
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

A flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.

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

Affected products

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

References

LinkTags
http://seclists.org/fulldisclosure/2021/Feb/14 Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1899675 Issue TrackingPatchThird Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://lists.debian.org/debian-lts-announce/2020/12/msg00008.html Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20210716-0003/ Third Party Advisory
https://support.apple.com/kb/HT212147 Third Party Advisory
https://www.debian.org/security/2020/dsa-4792 Third Party Advisory
http://seclists.org/fulldisclosure/2021/Feb/14 Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1899675 Issue TrackingPatchThird Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://lists.debian.org/debian-lts-announce/2020/12/msg00008.html Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20210716-0003/ Third Party Advisory
https://support.apple.com/kb/HT212147 Third Party Advisory
https://www.debian.org/security/2020/dsa-4792 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-25709), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.