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CVE-2026-16560

389-ds-base: 389-ds-base: heap-buffer-overflow in rdn_av_swap on quoted multivalued rdn

Published: Jul 22, 2026Updated: Jul 22, 2026 Sources: CVE List NVDCWE-1220
5.3MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 84.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

Description

A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-1220

Affected Products

Red Hat
commercial·US
Red Hat Directory Server 11On-premDatabase
Databases / relational
Red Hat Directory Server 12On-premDatabase
Databases / relational
Red Hat Directory Server 13On-premDatabase
Databases / relational
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
and 4 more affected products View all →

Exploitability

Workaround Available

References

https://access.redhat.com/security/cve/CVE-2026-16560
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2506102
bugzilla.redhat.com

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