CVE-2026-16560
MEDIUM389-ds-base: 389-ds-base: heap-buffer-overflow in rdn_av_swap on quoted multivalued rdn
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-16560
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2506102
https://bugzilla.redhat.com/show_bug.cgi?id=2506102
Scores
CVSS v3
5.3
EPSS
0.0024
EPSS Percentile
15.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1220
Status
published
Products (8)
Red Hat/Red Hat Directory Server 11
Red Hat/Red Hat Directory Server 12
Red Hat/Red Hat Directory Server 13
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Published
Jul 22, 2026
Tracked Since
Jul 22, 2026