Detections
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CVE-2020-36227

high

Description

A flaw was discovered in OpenLDAP before 2.4.57 leading to an infinite loop in slapd with the cancel_extop Cancel operation, resulting in denial of service.

References

https://www.debian.org/security/2021/dsa-4845

https://support.apple.com/kb/HT212531

https://support.apple.com/kb/HT212530

https://support.apple.com/kb/HT212529

https://security.netapp.com/advisory/ntap-20210226-0002/

https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html

http://seclists.org/fulldisclosure/2021/May/70

http://seclists.org/fulldisclosure/2021/May/65

http://seclists.org/fulldisclosure/2021/May/64

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/-/tags/OPENLDAP_REL_ENG_2_4_57

https://git.openldap.org/openldap/openldap/-/commit/9d0e8485f3113505743baabf1167e01e4558ccf5

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-23772

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

https://bugs.openldap.org/show_bug.cgi?id=9428

Details

Source: Mitre, NVD

Published: 2021-01-26

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: 0.77236