CVE-2026-14940

🔶 medium

Summary

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

Description

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.

CVSS Score

5.3

Medium

EPSS Score

0.3

Exploit Probability

Published Date

2026-07-07

First Seen: 2026-07-08

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 19.6% of all 335,187 vulnerabilities in our database.

#269,587

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jul 7, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

Red Hat would like to thank Denis Rastyogin (ALT Linux) for reporting this issue.

SSVC data provided by CISA

Last Modified 2026-07-09

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE IDs (Weakness Types)

CWE-122

Vendor	Product	Status	Affected Versions
redhat	directory_server	Affected	v11.0
redhat	directory_server	Affected	v12.0
redhat	directory_server	Affected	v13.0
redhat	enterprise_linux	Affected	v10.0
redhat	enterprise_linux	Affected	v7.0
redhat	enterprise_linux	Affected	v8.0
redhat	enterprise_linux	Affected	v9.0
redhat	389_directory_server	Affected	v-

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-15041	ℹ️ low	3.7	0.3	A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password verification function uses standard memcmp() for co...	2026-07-08
CVE-2026-14969	🔶 medium	4.4	0.1	A flaw was found in 389-ds-base where the LDBM backend attribute encryption uses a hardcoded static initialization vecto...	2026-07-07
CVE-2026-58384	⚠️ high	7.3	0.2	A flaw was found in GIMP's PSD parser. An integer overflow in read_RLE_channel() can cause an undersized heap allocation...	2026-07-07
CVE-2026-58380	⚠️ high	7.3	0.2	A flaw was found in GIMP's PNM file format parser. When parsing a specially crafted PNM file, the pnmscanner_gettoken() ...	2026-07-06
CVE-2026-59089	🔶 medium	5.5	0.2	A flaw was found in GIMP. The PlayStation TIM loader, responsible for handling PlayStation image files, incorrectly calc...	2026-07-06
CVE-2026-12610	🔶 medium	6.4	0.2	A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free v...	2026-06-30

CVE-2026-14940

Summary

Description

📊 Relative Risk Intelligence

🎯 CISA SSVC Assessment Updated: Jul 7, 2026

📦 Affected Products 8

🔗 References 2

🔗 Related CVEs 6