# CVE-2020-25692: Null dereference in openldap > An unauthenticated attacker can remotely crash the OpenLDAP server by sending a specially crafted request, causing a Denial of Service. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 8 Dec 2020 - **Updated:** 14 Oct 2026 - **Also known as:** ALPINE-CVE-2020-25692, BIT-openldap-2020-25692, DEBIAN-CVE-2020-25692, DLA-2425-1, DSA-4782-1, GHSA-73cr-r2gx-wgq6, JLSEC-2026-160, MGASA-2020-0407, RHSA-2021:1389, SUSE-SU-2020:14541-1, SUSE-SU-2020:3313-1, SUSE-SU-2020:3314-1, SUSE-SU-2020:3315-1, UBUNTU-CVE-2020-25692, USN-4622-1, USN-4622-2, openSUSE-SU-2020:1918-1, openSUSE-SU-2020:1920-1 ## What is CVE-2020-25692? CVE-2020-25692 is a high-severity vulnerability in Netapp Cloud Backup, published on 8 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service. Weakness: CWE-476 (NULL Pointer Dereference) ## Which versions are affected by CVE-2020-25692? 1 open source package ship an affected version, including openldap. It affects 4 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `openldap` | Bitnami | All versions | 2.4.55 | | `openldap` | Red Hat:enterprise_linux:7::client | All versions | 0:2.4.44-23.el7_9 | | `openldap-clients` | Red Hat:enterprise_linux:7::client | All versions | 0:2.4.44-23.el7_9 | | `openldap-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:2.4.44-23.el7_9 | | `openldap-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers` | Red Hat:enterprise_linux:7::client | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers-sql` | Red Hat:enterprise_linux:7::client | All versions | 0:2.4.44-23.el7_9 | | `openldap-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.44-23.el7_9 | | `openldap-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers-sql` | Red Hat:enterprise_linux:7::computenode | All versions | 0:2.4.44-23.el7_9 | | `openldap` | Red Hat:enterprise_linux:7::server | All versions | 0:2.4.44-23.el7_9 | | `openldap-clients` | Red Hat:enterprise_linux:7::server | All versions | 0:2.4.44-23.el7_9 | | `openldap-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:2.4.44-23.el7_9 | | `openldap-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers` | Red Hat:enterprise_linux:7::server | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers-sql` | Red Hat:enterprise_linux:7::server | All versions | 0:2.4.44-23.el7_9 | | `openldap` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.44-23.el7_9 | | `openldap-clients` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.44-23.el7_9 | | `openldap-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.44-23.el7_9 | | `openldap-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.44-23.el7_9 | | `openldap-servers-sql` | Red Hat:enterprise_linux:7::workstation | All versions | 0:2.4.44-23.el7_9 | | `openldap2` | SUSE:Enterprise Storage 5 | All versions | 2.4.41-18.77.1 | | `openldap2` | SUSE:HPE Helion OpenStack 8 | All versions | 2.4.41-18.77.1 | | `openldap2` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise Module for Basesystem 15 SP1 | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise Module for Development Tools 15 SP1 | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise Module for Development Tools 15 SP2 | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise Module for Legacy 12 | All versions | 2.4.41-18.24.23.1 | | `openldap2` | SUSE:Linux Enterprise Module for Legacy 15 SP1 | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise Module for Legacy 15 SP2 | All versions | 2.4.46-9.40.1 | | `openldap2` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 2.4.26-0.74.16.1 | | `openldap2-client` | SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 2.4.26-0.74.16.1 | | `openldap2` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 2.4.26-0.74.16.1 | | `openldap2-client` | SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 2.4.26-0.74.16.1 | | `openldap2-client-openssl1` | SUSE:Linux Enterprise Server 11-SECURITY | All versions | 2.4.26-0.74.16.1 | | `openldap2` | SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 2.4.41-18.77.1 | Products: Netapp Cloud Backup, Netapp Solidfire Baseboard Management Controller Firmware, Openldap Openldap, Redhat Enterprise Linux. ## How do I fix CVE-2020-25692? Upgrade openldap to 2.4.55 or later. ## Is CVE-2020-25692 being exploited? There is no known exploitation of CVE-2020-25692 in the wild and no public exploit code. ## Other vulnerabilities in Netapp Cloud Backup - [CVE-2019-19646](https://insights.sbomify.com/CVE-2019-19646/): Null dereference in n/a (critical 9.8) - [CVE-2019-19317](https://insights.sbomify.com/CVE-2019-19317/): Denial of service in n/a (critical 9.8) - [CVE-2019-16905](https://insights.sbomify.com/CVE-2019-16905/): Integer overflow in n/a (high 7.8) - [CVE-2019-19645](https://insights.sbomify.com/CVE-2019-19645/): Denial of service in n/a (medium 5.5) - [CVE-2018-15919](https://insights.sbomify.com/CVE-2018-15919/): Information disclosure in n/a (medium 5.3) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-25692 and fix it if it is affected. What it is: CVE-2020-25692 is a high-severity vulnerability in Netapp Cloud Backup, published on 8 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2020-25692 in the wild and no public exploit code. Affected packages and fixed versions: - openldap (Bitnami): affected all versions; fixed in 2.4.55 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2020-25692/ (Markdown: https://insights.sbomify.com/CVE-2020-25692/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-25692 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-25692 - OSV: https://osv.dev/vulnerability/CVE-2020-25692 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-25692/ Summaries are generated and may contain mistakes; the official description above is the record.