CVE-2026-11791

mediumpriority · track · 20EPSS 0.004 · 28 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.35% (28th) EPSS
CVSS 5 · medium
Is it mine?
8 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).

01

cvss

Technical severity, 0–10. One row per scoring source.

5.0
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:Hprimary · NVD / NIST USexploitability 0.7 · impact 4.2
v3.15mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:Hsecondary · ENISA EU
v3.15mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:Hsecondary · secalert@redhat.com USexploitability 0.7 · impact 4.2
v3.14.6mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416US
04

affected products (8)

Products and version ranges known to be affected.

05

also known as (3)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdNVDCVE.orgMITRE
published 2026-06-18modified 2026-06-30
07

references (8)

External citations — patches, advisories, analysis.

scry

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