CVE-2021-27212
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.
Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
EPSS
Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
- Score
- 0.66114 (66.1% probability)
- Percentile
- 99.3%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
References
Links listed in the CVE record. They lead to other sites, which CubePath does not control.
- bugs.openldap.org/show_bug.cgi?id=9454
- git.openldap.org/openldap/openldap/-/commit/3539fc33212b528…
- git.openldap.org/openldap/openldap/-/commit/9badb73425a6776…
- [debian-lts-announce] 20210220 [SECURITY] [DLA 2574-1] openldap security update (lists.debian.org)mailing-list
- DSA-4860 (debian.org)vendor-advisory
- security.netapp.com/advisory/ntap-20210319-0005
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 (lists.apache.org)mailing-list
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 (lists.apache.org)mailing-list
Timeline
- ID reserved
- Record published
- Record last updated
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About CubePath
CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.
Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:53 UTC. Sources and licenses