CVE-2020-17477

6.5 mediumEPSS 0.5%

Medium (6.5) in univention ucs\@school. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
CWE: CWE-522
Published: 2023-10-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

univention:ucs\@school

References

https://forge.univention.org/bugzilla/show_bug.cgi?id=50669
https://forge.univention.org/bugzilla/show_bug.cgi?id=50669

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