389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)
CVSS score
7.5
EPSS probability
%0.8
Risk score
0.1
Published
5 mo ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
Impact on My Inventory
Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.
Checking session…
Vulnerability description
DayBreach CVE AI Research
CVE-2026-9064 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-9064 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | redhat | 389-ds-base | View |
| 2 | Red Hat | Red Hat Directory Server 11.5 E4S for RHEL 8 | View |
| 3 | Red Hat | Red Hat Directory Server 11.7 E4S for RHEL 8 | View |
| 4 | Red Hat | Red Hat Directory Server 11.9 for RHEL 8 | View |
| 5 | Red Hat | Red Hat Directory Server 12.2 E4S for RHEL 9 | View |
| 6 | Red Hat | Red Hat Directory Server 12.4 E4S for RHEL 9 | View |
| 7 | Red Hat | Red Hat Enterprise Linux 10 | View |
| 8 | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | View |
| 9 | Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | View |
| 10 | Red Hat | Red Hat Enterprise Linux 8 | View |
| 11 | Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | View |
| 12 | Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | View |
| 13 | Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | View |
| 14 | Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | View |
| 15 | Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | View |
| 16 | Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | View |
| 17 | Red Hat | Red Hat Enterprise Linux 9 | View |
| 18 | Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | View |
| 19 | Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | View |
| 20 | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | View |
| 21 | Red Hat | Red Hat Directory Server 13.2 | View |
| 22 | Red Hat | Red Hat Directory Server 12 | View |
| 23 | Red Hat | Red Hat Directory Server 13 | View |
| 24 | Red Hat | Red Hat Enterprise Linux 6 | View |
| 25 | redhat | directory server | View |
| 26 | redhat | directory server | View |
| 27 | redhat | directory server | View |
| 28 | redhat | 389 directory server | View |
| 29 | redhat | enterprise linux | View |
| 30 | redhat | enterprise linux | View |
| 31 | redhat | enterprise linux | View |
| 32 | redhat | enterprise linux | View |
| 33 | redhat | enterprise linux | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 7.5 | CVSS V3_1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVE CNA |
| 7.5 | CVSS V3_1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVE ADP |
| 7.5 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.
Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-9064 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-9064 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
Get this vulnerability through the API
Affected products, version ranges, exploitation status and patch information in a single request, with a free key.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-9064"