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NVD / CVE Program· CNA redhat

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

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 70.2% of all records.
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: python3-lib389 (AlmaLinux:10) 3.1.3-7.el10_1; 389-ds-base (AlmaLinux:8) 1.4.3.39-23.module_el8.10.0+4139+ef6adba4; 389-ds-base-devel (AlmaLinux:8) 1.4.3.39-23.module_el8.10.0+4139+ef6adba4.

Low priority for now. Upgrade to python3-lib389 (AlmaLinux:10) 3.1.3-7.el10_1; 389-ds-base (AlmaLinux:8) 1.4.3.39-23.module_el8.10.0+4139+ef6adba4; 389-ds-base-devel (AlmaLinux:8) 1.4.3.39-23.module_el8.10.0+4139+ef6adba4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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).

HighCVSS 7.2 · v3.1—No exploit Fix available
Published
Feb 23, 2026
Updated
Jun 29, 2026
EPSS
1.2% · 70th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.2
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8

    • 8060020260303152239.0ca98e7e and laternot affected · rpm

  • Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8

    • 8080020260227193008.f969626e and laternot affected · rpm

  • Red Hat Red Hat Directory Server 11.9 for RHEL 8

    • 8100020260312105752.37ed7c03 and laternot affected · rpm

  • Red Hat Red Hat Directory Server 12

    • all versionsaffected

  • Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9

    • 9020020260304180546.1674d574 and laternot affected · rpm

  • Red Hat Red Hat Directory Server 12.4 EUS for RHEL 9

    • 9040020260225135630.1674d574 and laternot affected · rpm

  • Red Hat Red Hat Directory Server 13

    • all versionsaffected

  • Red Hat Red Hat Directory Server 13.1

    • 1772040913 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10

    • 0:3.1.3-7.el10_1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

    • 0:3.0.6-17.el10_0 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

    • 0:1.3.11.1-11.el7_9 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10python3-lib389before 3.1.3-7.el10_13.1.3-7.el10_1
AlmaLinux:8389-ds-basebefore 1.4.3.39-23.module_el8.10.0+4139+ef6adba41.4.3.39-23.module_el8.10.0+4139+ef6adba4
AlmaLinux:8389-ds-base-develbefore 1.4.3.39-23.module_el8.10.0+4139+ef6adba41.4.3.39-23.module_el8.10.0+4139+ef6adba4
AlmaLinux:8389-ds-base-legacy-toolsbefore 1.4.3.39-23.module_el8.10.0+4139+ef6adba41.4.3.39-23.module_el8.10.0+4139+ef6adba4
AlmaLinux:8389-ds-base-libsbefore 1.4.3.39-23.module_el8.10.0+4139+ef6adba41.4.3.39-23.module_el8.10.0+4139+ef6adba4
AlmaLinux:8389-ds-base-snmpbefore 1.4.3.39-23.module_el8.10.0+4139+ef6adba41.4.3.39-23.module_el8.10.0+4139+ef6adba4
AlmaLinux:8python3-lib389before 1.4.3.39-23.module_el8.10.0+4139+ef6adba41.4.3.39-23.module_el8.10.0+4139+ef6adba4
AlmaLinux:9389-ds-basebefore 2.7.0-10.el9_72.7.0-10.el9_7
AlmaLinux:9389-ds-base-develbefore 2.7.0-10.el9_72.7.0-10.el9_7
AlmaLinux:9389-ds-base-libsbefore 2.7.0-10.el9_72.7.0-10.el9_7
AlmaLinux:9389-ds-base-snmpbefore 2.7.0-10.el9_72.7.0-10.el9_7
AlmaLinux:9python3-lib389before 2.7.0-10.el9_72.7.0-10.el9_7
Debian:12389-ds-basefrom 0—
Debian:13389-ds-basebefore 3.1.2+dfsg1-1+deb13u13.1.2+dfsg1-1+deb13u1
openSUSE:Leap 15.6389-dsbefore 2.2.10~git200.96444f3c3-150600.8.26.12.2.10~git200.96444f3c3-150600.8.26.1
openSUSE:Leap 16.0389-dsbefore 3.0.6~git249.6688af9b2-160000.1.13.0.6~git249.6688af9b2-160000.1.1
openSUSE:Tumbleweed389-dsbefore 3.1.4+e2562f589-1.13.1.4+e2562f589-1.1
Red Hat:directory_server_e4s:11.5::el8389-ds-basebefore 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a
Red Hat:directory_server_e4s:11.5::el8389-ds-base-debuginfobefore 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a
Red Hat:directory_server_e4s:11.5::el8389-ds-base-debugsourcebefore 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a
Red Hat:directory_server_e4s:11.5::el8389-ds-base-develbefore 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a
Red Hat:directory_server_e4s:11.5::el8389-ds-base-legacy-toolsbefore 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a
Red Hat:directory_server_e4s:11.5::el8389-ds-base-legacy-tools-debuginfobefore 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a
Red Hat:directory_server_e4s:11.5::el8389-ds-base-libsbefore 0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a0:1.4.3.34-5.module+el8dsrv+24053+0eac3b1a

+96

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-11774389-ds-base: 389-ds-base: integer overflow in sasl packet length bypasses size limit leading to heap buffer overflow
    30Monitor
  • CVE-2024-3657389-ds-base: potential denial of service via specially crafted kerberos as-req request
    30Monitor
  • CVE-2024-5953389-ds-base: malformed userpassword hash may cause denial of service
    22Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-2199May 28, 2024 · 389-ds-base: malformed userpassword may cause crash at do_modify in slapd/modify.c
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:389-ds-base2.7.0-10.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:389-ds-base-devel2.7.0-10.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:389-ds-base-legacy-tools1.4.3.39-23.module_el8.10.0+4139+ef6adba4 · AlmaLinux:8Package registry (OSV)
almalinux:389-ds-base-libs2.7.0-10.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:389-ds-base-snmp2.7.0-10.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:python3-lib3892.7.0-10.el9_7 · AlmaLinux:9Package registry (OSV)
debian:389-ds-base3.1.2+dfsg1-1+deb13u1 · Debian:13Package registry (OSV)
opensuse:389-ds2.2.10~git200.96444f3c3-150600.8.26.1 · openSUSE:Leap 15.6Package registry (OSV)
red hat:389-ds-base0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:389-ds-base-bdb0:3.1.3-7.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:389-ds-base-bdb-debuginfo0:3.1.3-7.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:389-ds-base-debuginfo0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:389-ds-base-debugsource0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:389-ds-base-devel0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::crbPackage registry (OSV)
red hat:389-ds-base-libs0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:389-ds-base-libs-debuginfo0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:389-ds-base-snmp0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:389-ds-base-snmp-debuginfo0:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:cockpit-389-ds0:2.4.5-22.module+el9dsrv+24021+288fb6da · Red Hat:directory_server_eus:12.4::el9Package registry (OSV)
red hat:python3-lib3890:2.7.0-10.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
rocky linux:389-ds-base0:2.7.0-10.el9_7 · Rocky Linux:9Package registry (OSV)
suse:389-ds2.2.10~git200.96444f3c3-150500.3.42.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:389-ds2.2.10~git200.96444f3c3-150600.8.26.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records