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CVE Record

CVE-2026-18922: 389-ds-base: 389-ds-base: sasl plain authentication allows privilege escalation to directory manager via stale identity in cyrus sasl auxiliary property

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes that second bind. An attacker can send a SASL PLAIN bind as cn=Directory Manager with an incorrect password, then complete a SASL ANONYMOUS bind on the same connection, causing the server to grant Directory Manager authority without any valid credentials. A variant using a valid low-privileged account's own successful bind instead of an anonymous one is also possible.

CriticalCVSS 9.8Not 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 · medium confidence lookup

CWE-287: Credential and account abuse lookup

Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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CVE-2026-18922 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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
20Source links

SSVC decision data

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

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
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9redhat

Vulnerability scoring details

Base CVSS 3.1 score

9.8Critical
CVSS 3.1 vector shape for CVE-2026-18922Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  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, 8080020260903102346.f969626eaffected
Red HatRed Hat Directory Server 11.9 for RHEL 8redhat-ds:11, 8100020260904171440.37ed7c03affected
Red HatRed Hat Directory Server 12.2 E4S for RHEL 9redhat-ds:12, 9020020260903155914.1674d574affected
Red HatRed Hat Directory Server 12.4 E4S for RHEL 9redhat-ds:12, 9040020260903102623.1674d574affected
Red HatRed Hat Enterprise Linux 10389-ds-base, 0:3.2.0-10.el10_2affected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support389-ds-base, 0:3.0.6-21.el10_0affected
Red HatRed Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION389-ds-base, 0:1.2.11.15-97.el6_10.1affected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support389-ds-base, 0:1.3.11.1-15.el7_9affected
Red HatRed Hat Enterprise Linux 8389-ds:1.4, 8100020260904155442.25e700aaaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support389-ds:1.4, 8040020260901171549.96015a92affected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On389-ds:1.4, 8040020260901171549.96015a92affected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support389-ds:1.4, 8060020260901145727.824efc52affected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On389-ds:1.4, 8060020260901145727.824efc52affected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service389-ds:1.4, 8080020260831180218.6dbb3803affected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions389-ds:1.4, 8080020260831180218.6dbb3803affected
Red HatRed Hat Enterprise Linux 9389-ds-base, 0:2.8.0-10.el9_8affected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions389-ds-base, 0:2.2.4-22.el9_2affected
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions389-ds-base, 0:2.4.5-29.el9_4affected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support389-ds-base, 0:2.6.1-24.el9_6affected
Red HatRed Hat Directory Server 12389-ds-baseaffected
Red HatRed Hat Directory Server 13389-ds-baseunaffected
Weakness

CWE details

CWE-287

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

CWE-287 · source CWE mapping

Improper Authentication

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

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