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CVE-2022-32746

20
FAUCET Score

CVE-2022-32746 is a use-after-free vulnerability in the Samba AD LDAP server, specifically within its AD DC database audit logging module, affecting Samba products. This flaw allows an authenticated attacker to access freed memory when modifying privileged attributes like userAccountControl. Rated Medium (CVSS 5.4), it has a low impact on integrity and availability, with no confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.3.0, < 4.14.14CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.15.0, < 4.15.9CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.16.0, < 4.16.4CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.06%
Probability of exploitation in next 30 days
EPSS Percentile
61.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0106 is in the 75th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

githubpatch availablevia llm_extracted
View patch
microsoftpatch availablevia msrc
Product: 16864-17084Fixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: azl3 samba 4.18.3-1 on Azure Linux 3.0Fixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: 18826-17084Fixed in: 2.7.2-1
microsoftpatch availablevia msrc
Product: azl3 libldb 2.7.2-1 on Azure Linux 3.0Fixed in: 2.7.2-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: libldb-0:2.5.2-1.el9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libldb-0:2.5.2-2.el8
View patch
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: libldb

Vendor Advisories (6)

microsoft2024-Dec/CVE-2022-32746

CVE-2022-32746

Dec 10, 2024
microsoft2024-Nov/CVE-2022-32746

CVE-2022-32746

Nov 12, 2024
microsoft2024-Oct/CVE-2022-32746

CVE-2022-32746

Oct 8, 2024
githubllm-github-ae2e8353f0c578eaHIGH

AS-2022-014: Samba

Dec 27, 2022
microsoft2022-Aug/CVE-2022-32746Moderate

A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP message values freed by a preceding database module resulting in a use-after-free issue. This issue is only possible when modifying certain privileged attributes such as userAccountControl.

Aug 9, 2022
redhatCVE-2022-32746Moderate

samba: AD users can induce a use-after-free in the server process with an LDAP add or modify request

Jul 27, 2022

References

security.gentoo.org / glsa/202309-06
samba.org / samba/security/CVE-2022-32746.html
PatchVendor Advisory