LiveActive security incident?Get immediate response
CVE Record

CVE-2026-75896: Use of Hard-coded LDAP Credentials in TÜBİTAK BİLGEM's Liderahenk

Use of Hard-coded Credentials vulnerability in TÜBİTAK BİLGEM Software Technologies Research Institute Liderahenk allows Try Common or Default Usernames and Passwords. This issue affects Liderahenk: before 3.5.5.

CriticalCVSS 9.1Not KEV-listedUpdated
Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

Liderahenk versions before 3.5.5 contain hard-coded LDAP credentials. An unauthenticated network attacker could potentially use known or default credentials to access sensitive information or make unauthorized changes. The supplied sources do not identify the credential’s privileges, affected component, or confirmed attacks.

Executive priority

Treat this as an urgent remediation item. Identify affected deployments immediately, reduce network exposure, and move versions before 3.5.5 onto a vendor-supported fixed release. Investigate LDAP activity because successful abuse could compromise sensitive information and permit unauthorized changes without requiring an existing account.

Technical view

CVE-2026-75896 is a CWE-798 hard-coded credentials flaw affecting Liderahenk before 3.5.5. CVSS 3.1 is 9.1: network-accessible, low complexity, no privileges or user interaction required, with high confidentiality and integrity impact but no rated availability impact.

Likely exposure

Organizations running Liderahenk earlier than 3.5.5 are potentially exposed, especially where the affected LDAP authentication path is network-reachable. The source bundle does not establish whether every deployment enables the vulnerable component or whether external internet exposure is required.

Exploitation context

The supplied bundle reports no CISA KEV listing and provides no evidence of active exploitation or public exploit availability. Exploitation is nevertheless assessed as technically straightforward by the CVSS vector because it requires network access, low complexity, no prior privileges, and no user interaction.

Researcher notes

The record establishes the version boundary, CWE-798 classification, and CVSS vector, but omits the hard-coded username, credential privileges, vulnerable endpoint, and deployment prerequisites. The affected-data entry lists version “0” with a default unaffected status, creating metadata ambiguity; the narrative explicitly states that versions before 3.5.5 are affected.

Mitigation direction

  • Confirm installed Liderahenk versions and prioritize systems earlier than 3.5.5.
  • Upgrade to version 3.5.5 or later after confirming vendor guidance and compatibility.
  • Rotate affected LDAP credentials after upgrading, if vendor guidance identifies them.
  • Restrict network access to Liderahenk and LDAP services until remediation is complete.
  • Monitor vendor and Turkish government advisories for additional remediation details.

Validation and detection

  • Inventory all Liderahenk deployments and record their exact installed versions.
  • Verify remediated systems report version 3.5.5 or later.
  • Review LDAP authentication logs for unexpected accounts, sources, or access patterns.
  • Confirm affected credentials were rotated where applicable and old credentials no longer authenticate.
  • Validate network controls limit Liderahenk and LDAP access to authorized systems.
Prepared
Confidence
high
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-798: 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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-75896 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.1 (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:N

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
3Timeline events
1ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical 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
9.1CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N3.95.2TR-CERT

Vulnerability scoring details

Base CVSS 3.1 score

9.1Critical
CVSS 3.1 vector shape for CVE-2026-75896Attack 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:N

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. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. 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
TÜBİTAK BİLGEM Software Technologies Research InstituteLiderahenk0unaffected
Weakness

CWE details

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

CWE-798 · source CWE mapping

Use of Hard-coded Credentials

Use of Hard-coded Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.