CVE-2020-36223

A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).

CVSS 3.1

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

EPSS

4.2% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-25)

CWEs

CWE-125, CWE-415

Published

2021-01-26

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• apple:mac_os_x
• 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=9408
• https://git.openldap.org/openldap/openldap/-/commit/21981053a1195ae1555e23df4d9ac68d34ede9dd

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