# CVE-2025-14905: 389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflow > Remote attackers can trigger a heap buffer overflow in 389-ds-base to execute arbitrary code or cause denial of service. - **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** An administrator - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 23 Feb 2026 - **Updated:** 29 Jun 2026 - **Also known as:** ALSA-2026:3189, ALSA-2026:3208, ALSA-2026:5513, AZL-78363, CLSA-2026-1772573644, CLSA-2026-1772574256, DEBIAN-CVE-2025-14905, GHSA-q4hc-vp2m-fr47, RHSA-2026:3189, RHSA-2026:3208, RHSA-2026:3504, RHSA-2026:4207, RHSA-2026:4661, RHSA-2026:4720, RHSA-2026:5196, RHSA-2026:5511, RHSA-2026:5512, RHSA-2026:5513, RHSA-2026:5514, RHSA-2026:5568, RHSA-2026:5569, RHSA-2026:5576, RHSA-2026:5597, RHSA-2026:5598, RHSA-2026:6220, RHSA-2026:6268, RLSA-2026:3189, RLSA-2026:3208, RLSA-2026:5513, SUSE-SU-2026:0913-1, SUSE-SU-2026:0914-1, SUSE-SU-2026:0915-1, SUSE-SU-2026:1753-1, SUSE-SU-2026:20927-1, UBUNTU-CVE-2025-14905, openSUSE-SU-2026:10500-1, openSUSE-SU-2026:20415-1 ## What is CVE-2025-14905? CVE-2025-14905 is a high-severity memory corruption vulnerability in Red Hat Directory Server 11.5 E4S for RHEL 8, published on 23 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim. ### Official description A flaw was found in the 389-ds-base server. A heap buffer overflow vulnerability exists in the `schema_attr_enum_callback` function within the `schema.c` file. This occurs because the code incorrectly calculates the buffer size by summing alias string lengths without accounting for additional formatting characters. When a large number of aliases are processed, this oversight can lead to a heap overflow, potentially allowing a remote attacker to cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE). Weakness: CWE-122 (Heap-based Buffer Overflow) ## Which versions are affected by CVE-2025-14905? | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `python3-lib389` | AlmaLinux:10 | All versions | 3.1.3-7.el10_1 | | `389-ds-base` | AlmaLinux:8 | All versions | 1.4.3.39-23.module_el8.10.0+4139+ef6adba4 | | `389-ds-base-devel` | AlmaLinux:8 | All versions | 1.4.3.39-23.module_el8.10.0+4139+ef6adba4 | | `389-ds-base-legacy-tools` | AlmaLinux:8 | All versions | 1.4.3.39-23.module_el8.10.0+4139+ef6adba4 | | `389-ds-base-libs` | AlmaLinux:8 | All versions | 1.4.3.39-23.module_el8.10.0+4139+ef6adba4 | | `389-ds-base-snmp` | AlmaLinux:8 | All versions | 1.4.3.39-23.module_el8.10.0+4139+ef6adba4 | | `python3-lib389` | AlmaLinux:8 | All versions | 1.4.3.39-23.module_el8.10.0+4139+ef6adba4 | | `389-ds-base` | AlmaLinux:9 | All versions | 2.7.0-10.el9_7 | | `389-ds-base-devel` | AlmaLinux:9 | All versions | 2.7.0-10.el9_7 | | `389-ds-base-libs` | AlmaLinux:9 | All versions | 2.7.0-10.el9_7 | | `389-ds-base-snmp` | AlmaLinux:9 | All versions | 2.7.0-10.el9_7 | | `python3-lib389` | AlmaLinux:9 | All versions | 2.7.0-10.el9_7 | | `389-ds-base` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-debuginfo` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-debugsource` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-devel` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-legacy-tools` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-legacy-tools-debuginfo` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-libs` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-libs-debuginfo` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-snmp` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base-snmp-debuginfo` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `cockpit-389-ds` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `python3-lib389` | Red Hat:directory_server:11.9::el8 | All versions | 0:1.4.3.39-21.module+el8dsrv+24083+d25fcbb4 | | `389-ds-base` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-debuginfo` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-debugsource` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-devel` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-legacy-tools` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-legacy-tools-debuginfo` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-libs` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-libs-debuginfo` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-snmp` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base-snmp-debuginfo` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `cockpit-389-ds` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `python3-lib389` | Red Hat:directory_server_e4s:11.5::el8 | All versions | 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a | | `389-ds-base` | Red Hat:directory_server_e4s:11.7::el8 | All versions | 0:1.4.3.34-14.module+el8dsrv+24041+386df666 | | `389-ds-base-debuginfo` | Red Hat:directory_server_e4s:11.7::el8 | All versions | 0:1.4.3.34-14.module+el8dsrv+24041+386df666 | | `389-ds-base-debugsource` | Red Hat:directory_server_e4s:11.7::el8 | All versions | 0:1.4.3.34-14.module+el8dsrv+24041+386df666 | | `389-ds-base-devel` | Red Hat:directory_server_e4s:11.7::el8 | All versions | 0:1.4.3.34-14.module+el8dsrv+24041+386df666 | ## How do I fix CVE-2025-14905? Apply the vendor's patch. ## Is CVE-2025-14905 being exploited? There is no known exploitation of CVE-2025-14905 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-14905 and fix it if it is affected. What it is: CVE-2025-14905 is a high-severity memory corruption vulnerability in Red Hat Directory Server 11.5 E4S for RHEL 8, published on 23 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim. Exploitation: There is no known exploitation of CVE-2025-14905 in the wild and no public exploit code. Affected product: Red Hat Directory Server 11.5 E4S for RHEL 8. No package-level version data is available, so check the vendor advisory linked from the reference page. 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-2025-14905/ (Markdown: https://insights.sbomify.com/CVE-2025-14905/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-14905 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-14905 - OSV: https://osv.dev/vulnerability/CVE-2025-14905 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-14905/ Summaries are generated and may contain mistakes; the official description above is the record.