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CVE-2020-36221
An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing,…
High7.5EPSS 85.0%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).
Timeline
ID reserved
By mitre
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 85.0% · top 0.3% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (17)
- https://bugs.openldap.org/show_bug.cgi?id=9404 (opens in a new tab)x_refsource_MISCx_transferred
- https://git.openldap.org/openldap/openldap/-/commit/38ac838e4150c626bbfa0082b7e2cf3a2bb4df31 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.openldap.org/show_bug.cgi?id=9424 (opens in a new tab)x_refsource_MISCx_transferred
- https://git.openldap.org/openldap/openldap/-/commit/58c1748e81c843c5b6e61648d2a4d1d82b47e842 (opens in a new tab)x_refsource_MISCx_transferred
- https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57 (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20210203 [SECURITY] [DLA 2544-1] openldap security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4845 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://security.netapp.com/advisory/ntap-20210226-0002/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT212529 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT212531 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT212530 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20210526 APPLE-SA-2021-05-25-2 macOS Big Sur 11.4 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20210526 APPLE-SA-2021-05-25-4 Security Update 2021-003 Catalina (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20210526 APPLE-SA-2021-05-25-3 Security Update 2021-004 Mojave (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-36221)Record last updated .