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CVE Record

CVE-2026-11788: 389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser

A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.

MediumCVSS 5.9Not KEV-listedUpdated
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Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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CWE-476: Exact CWE lookup

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CVE-2026-11788 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.9 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
1ADP providers
19Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H2.23.6redhat

Vulnerability scoring details

Base CVSS 3.1 score

5.9Medium
CVSS 3.1 vector shape for CVE-2026-11788Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. Source timelineredhat

    Made public.

  3. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Directory Server 11.5 E4S for RHEL 8redhat-ds:11, 8060020260908152739.0ca98e7eaffected
Red HatRed Hat Directory Server 11.7 E4S for RHEL 8redhat-ds:11, 8080020260806114250.f969626eaffected
Red HatRed Hat Directory Server 11.9 for RHEL 8redhat-ds:11, 8100020260803140625.37ed7c03affected
Red HatRed Hat Directory Server 12.2 E4S for RHEL 9redhat-ds:12, 9020020260730155601.1674d574affected
Red HatRed Hat Directory Server 12.4 E4S for RHEL 9redhat-ds:12, 9040020260810131422.1674d574affected
Red HatRed Hat Enterprise Linux 10389-ds-base, 0:3.2.0-9.el10_2affected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support389-ds-base, 0:3.0.6-20.el10_0affected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support389-ds-base, 0:1.3.11.1-14.el7_9affected
Red HatRed Hat Enterprise Linux 8389-ds:1.4, 8100020260806150504.25e700aaaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support389-ds:1.4, 8040020260803141511.96015a92affected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On389-ds:1.4, 8040020260803141511.96015a92affected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support389-ds:1.4, 8060020260806120442.824efc52affected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On389-ds:1.4, 8060020260806120442.824efc52affected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service389-ds:1.4, 8080020260806114228.6dbb3803affected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions389-ds:1.4, 8080020260806114228.6dbb3803affected
Red HatRed Hat Enterprise Linux 9389-ds-base, 0:2.8.0-9.el9_8affected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions389-ds-base, 0:2.2.4-20.el9_2affected
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions389-ds-base, 0:2.4.5-27.el9_4affected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support389-ds-base, 0:2.6.1-23.el9_6affected
Red HatRed Hat Directory Server 12redhat-ds:12/389-ds-baseaffected
Red HatRed Hat Directory Server 13389-ds-baseaffected
Red HatRed Hat Enterprise Linux 6389-ds-baseunknown
Weakness

CWE details

CWE-476

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-476 · source CWE mapping

NULL Pointer Dereference

NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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