CVE-2020-36227

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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

77% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-25)

CWE

CWE-835

Published

2021-01-26

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• apple:macos
• debian:debian_linux
• openldap:openldap

References

• http://seclists.org/fulldisclosure/2021/May/64
• http://seclists.org/fulldisclosure/2021/May/65
• http://seclists.org/fulldisclosure/2021/May/70
• https://bugs.openldap.org/show_bug.cgi?id=9428
• https://git.openldap.org/openldap/openldap/-/commit/9d0e8485f3113505743baabf1167e01e4558ccf5

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