5.3

CVE-2026-14940

389-ds-base: 389-ds-base: heap-buffer-overflow in dn normalization via quoted multivalued rdn

A heap-buffer-overflow flaw was found in 389 Directory Server (389-ds-base). When
normalizing a Distinguished Name (DN) that contains a legacy-quoted value encoding a
multivalued nested Relative Distinguished Name (RDN), the server can write past the
end of a heap allocation while sorting RDN attribute-value pairs. An unauthenticated
remote attacker can trigger this condition by sending an LDAP operation whose DN
reaches the DN normalization routine, such as a search with a crafted base DN. This
can corrupt heap memory and may cause denial of service.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt Red Hat Directory Server 11
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Directory Server 12
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Directory Server 13
Default Statusaffected
HerstellerRed Hat
≫
Produkt Red Hat Enterprise Linux 10
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 6
Default Statusunknown
HerstellerRed Hat
≫
Produkt Red Hat Enterprise Linux 7
Default Statusaffected
HerstellerRed Hat
≫
Produkt Red Hat Enterprise Linux 8
Default Statusaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 9
Default Statusaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.31% 0.225
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secalert@redhat.com 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

https://access.redhat.com/security/cve/CVE-2026-14940
https://bugzilla.redhat.com/show_bug.cgi?id=2497697