CVE-2020-25709

Name: CVE-2020-25709
Creator: NVD / NIST
Published: 2021-05-18T12:15:07.673+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.86%

Last modified Jun 17, 2026

CVE-2020-25709 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 2.86% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.86%

85.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-617

Affected Software

Vendor	Product	Versions
Openldap	Openldap	< 2.4.56
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Apple	Mac Os X	>= 10.14.0, < 10.14.6
Apple	Mac Os X	>= 10.15, < 10.15.7
Apple	Mac Os X	10.14.6
Apple	Mac Os X	10.15.7
Apple	Macos	>= 11.0, < 11.0.1
Redhat	Jboss Core Services	All versions

References

http://seclists.org/fulldisclosure/2021/Feb/14Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1899675Issue Tracking, Patch, Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2020/12/msg00008.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210716-0003/Third Party Advisory
https://support.apple.com/kb/HT212147Third Party Advisory
https://www.debian.org/security/2020/dsa-4792Third Party Advisory
http://seclists.org/fulldisclosure/2021/Feb/14Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1899675Issue Tracking, Patch, Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2020/12/msg00008.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210716-0003/Third Party Advisory
https://support.apple.com/kb/HT212147Third Party Advisory
https://www.debian.org/security/2020/dsa-4792Third Party Advisory

Timeline

Published: May 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25709?

How severe is CVE-2020-25709?

CVE-2020-25709 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.86% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25709?

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-2020-25709?

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

Scan your code now

Source: NVD / NIST