CVE-2020-25710

high

Description

A flaw was found in OpenLDAP in versions before 2.4.56. This flaw allows an attacker who sends a malicious packet processed by OpenLDAP to force a failed assertion in csnNormalize23(). The highest threat from this vulnerability is to system availability.

References

Advisories
More

https://www.debian.org/security/2020/dsa-4792

https://security.netapp.com/advisory/ntap-20210716-0003/

https://lists.debian.org/debian-lts-announce/2020/12/msg00008.html

https://bugzilla.redhat.com/show_bug.cgi?id=1899678

https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E

https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E

https://git.openldap.org/openldap/openldap/-/commit/ab3915154e69920d480205b4bf5ccb2b391a0a1f#a2feb6ed0257c21c6672793ee2f94eaadc10c72c

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-18365

https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Details

Source: Mitre, NVD

Published: 2021-05-28

Updated: 2026-10-14

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.02728