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.
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.
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.
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.
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.