CVE-2021-27212

PoC —

CVSS 3.1

7.5 high

EPSS

64%p99

Published

Feb 14, 2021 (Feb 14, 2021)

Modified

Jun 17, 2026

Description

In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.

Vendors: openldap debian
Products: openldap, debian linux
Weakness: CWE-617
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (64.1%)

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