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Vulnerability · Published Feb 23, 2026 · Assigned by redhat

CVE-2025-14905389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflow

High 7.2

In plain English

A high-severity heap buffer overflow in Red Hat Directory Server 11.5 E4S for RHEL 8 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.2High
Exploit odds (30 days)1.3%top 29.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8389-ds-base1.4.3.39-23.module_el8.10.0+4139+ef6adba4ALSA-2026:5513
AlmaLinux:9389-ds-base2.7.0-10.el9_7ALSA-2026:3189
AlmaLinux:8389-ds-base-devel1.4.3.39-23.module_el8.10.0+4139+ef6adba4ALSA-2026:5513
AlmaLinux:9389-ds-base-devel2.7.0-10.el9_7ALSA-2026:3189
AlmaLinux:8389-ds-base-legacy-tools1.4.3.39-23.module_el8.10.0+4139+ef6adba4ALSA-2026:5513
AlmaLinux:8389-ds-base-libs1.4.3.39-23.module_el8.10.0+4139+ef6adba4ALSA-2026:5513
AlmaLinux:9389-ds-base-libs2.7.0-10.el9_7ALSA-2026:3189
AlmaLinux:8389-ds-base-snmp1.4.3.39-23.module_el8.10.0+4139+ef6adba4ALSA-2026:5513
AlmaLinux:9389-ds-base-snmp2.7.0-10.el9_7ALSA-2026:3189
AlmaLinux:10python3-lib3893.1.3-7.el10_1ALSA-2026:3208
AlmaLinux:8python3-lib3891.4.3.39-23.module_el8.10.0+4139+ef6adba4ALSA-2026:5513
AlmaLinux:9python3-lib3892.7.0-10.el9_7ALSA-2026:3189
Debian:12389-ds-baseno fix listedDEBIAN-CVE-2025-14905
Debian:13389-ds-base3.1.2+dfsg1-1+deb13u1DEBIAN-CVE-2025-14905
Rocky Linux:10389-ds-base0:3.1.3-7.el10_1RLSA-2026:3208
Rocky Linux:8389-ds-base0:1.4.3.39-23.module+el8.10.0+40135+69dd2a79RLSA-2026:5513
Rocky Linux:9389-ds-base0:2.7.0-10.el9_7RLSA-2026:3189
Ubuntu:22.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2025-14905
Ubuntu:24.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2025-14905
Ubuntu:25.10389-ds-baseno fix listedUBUNTU-CVE-2025-14905
Ubuntu:26.04:LTS389-ds-baseno fix listedUBUNTU-CVE-2025-14905
Ubuntu:26.10389-ds-baseno fix listedUBUNTU-CVE-2025-14905

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8 see references
Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8 see references
Red Hat Red Hat Directory Server 11.9 for RHEL 8 see references
Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9 see references
Red Hat Red Hat Directory Server 12.4 EUS for RHEL 9 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references
Red Hat Red Hat Directory Server 13.1 see references
Red Hat Red Hat Directory Server 12 see references
Red Hat Red Hat Directory Server 13 see references
Red Hat Red Hat Enterprise Linux 6 see references

Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References