CVE-2023-2953

Name: CVE-2023-2953
Creator: NVD / NIST
Published: 2023-05-30T22:15:10.613+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.95%

Last modified Jun 17, 2026

CVE-2023-2953 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function.. EPSS estimates a 1.95% chance of exploitation in the next 30 days.

Description

A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.95%

77.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Openldap	Openldap	2.4
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Apple	Macos	>= 11.0, < 11.7.9
Apple	Macos	>= 12.0, < 12.6.8
Apple	Macos	>= 13.0, < 13.5
Netapp	Active Iq Unified Manager	All versions
Netapp	Clustered Data Ontap	All versions
Netapp	Ontap Tools	All versions
Netapp	H300s Firmware	All versions
Netapp	H500s Firmware	All versions
Netapp	H700s Firmware	All versions
Netapp	H410s Firmware	All versions
Netapp	H410c Firmware	All versions

References

http://seclists.org/fulldisclosure/2023/Jul/47Mailing List
http://seclists.org/fulldisclosure/2023/Jul/48Mailing List
http://seclists.org/fulldisclosure/2023/Jul/52Mailing List
https://access.redhat.com/security/cve/CVE-2023-2953Third Party Advisory
https://bugs.openldap.org/show_bug.cgi?id=9904Issue Tracking, Vendor Advisory
https://security.netapp.com/advisory/ntap-20230703-0005/Third Party Advisory
https://support.apple.com/kb/HT213843Third Party Advisory
https://support.apple.com/kb/HT213844Third Party Advisory
https://support.apple.com/kb/HT213845Third Party Advisory
http://seclists.org/fulldisclosure/2023/Jul/47Mailing List
http://seclists.org/fulldisclosure/2023/Jul/48Mailing List
http://seclists.org/fulldisclosure/2023/Jul/52Mailing List
https://access.redhat.com/security/cve/CVE-2023-2953Third Party Advisory
https://bugs.openldap.org/show_bug.cgi?id=9904Issue Tracking, Vendor Advisory
https://security.netapp.com/advisory/ntap-20230703-0005/Third Party Advisory
https://support.apple.com/kb/HT213843Third Party Advisory
https://support.apple.com/kb/HT213844Third Party Advisory
https://support.apple.com/kb/HT213845Third Party Advisory

Timeline

Published: May 30, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-2953?

A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function.

How severe is CVE-2023-2953?

CVE-2023-2953 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.95% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2953?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2953?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST