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TI-2020-13235 Aliases CVE-2020-17477GHSA-39vr-m637-4v3h

Incorrect LDAP ACLs in ucs-school-ldap-acls-master in UCS@school before 4.4v5-errata…

Priority LOW 29CWE-522Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-522.

Summary

Incorrect LDAP ACLs in ucs-school-ldap-acls-master in UCS@school before 4.4v5-errata allow remote teachers, staff, and school administrators to read LDAP password hashes (sambaNTPassword, krb5Key, sambaPasswordHistory, and pwhistory) via LDAP search requests. For example, a teacher can gain administrator access via an NTLM hash.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00453 39th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:univention:ucs\@school:*:*:*:*:*:*:*:*up to 4.4VulnerableUnivention
  • cpe:2.3:a:univention:ucs\@school:*:*:*:*:*:*:*:* Versions up to 4.4 Vulnerable ·Univention

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-17477
  2. 2026-10-03 Alias added: GHSA-39vr-m637-4v3h

References

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences