AUGUST 15, 2026
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Case File

CVE-2026-18663

MEDIUM · CVSS 5.9 EPSS 0.40%

Source: NVD + CISA KEV + EPSS · Published 2026-08-12 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

A vulnerability exists in the 389-ds-base software, where the get_ldapmessage_controls_ext() function improperly handles memory management, leading to a double-free condition. This flaw allows unauthenticated remote attackers to exploit the system by sending a specially crafted BIND request, potentially causing heap corruption and resulting in a denial of service. Organizations using 389-ds-base should prioritize addressing this vulnerability to mitigate risks associated with remote exploitation.

CVE
CVE-2026-18663
Severity
MEDIUM
CVSS
5.9
EPSS
0.40%

Original NVD Description

A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function frees the parsed controls array on the Session Tracking critical-control rejection path without clearing the SLAPI_REQCONTROLS pblock slot. Operation teardown then frees the same pointer again, causing a double-free. An unauthenticated remote attacker can trigger this with a single BIND request carrying a critical Session Tracking control, resulting in heap corruption and potential denial of service.