CVE-2026-11793

MEDIUM EPSS 25.3%
Published Jun 9, 20262w ago · Modified Jun 17, 20261w ago
4.9 CVSS 3.1
Medium
Find Similar
Published Jun 9, 2026 2w ago
Last Modified Jun 17, 2026 1w ago

Description

A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only.

CVSS Details

Base Score
4.9
Exploitability
1.2
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
25.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-121

Affected Products 1

VendorProductVersionRange
redhat389_directory_server*any

References 3

  • access.redhat.com https://access.redhat.com/security/cve/CVE-2026-11793
    Vendor Advisory
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2484914
    Issue TrackingVendor Advisory
  • redhat.atlassian.net https://redhat.atlassian.net/browse/PSIRTSUPT-7600
    Permissions Required

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.