CVE-2022-32746Network attack vector

Service crash via freed LDAP value access

Published Aug 25, 2022 · Updated Aug 3, 2024

Use-after-free in the Samba AD LDAP server before 4.16.4 allows remote authenticated users to crash the service via LDAP requests. A preceding database module reallocates a shallow-copied LDAP value array, leaving the original message with a dangling pointer that the audit logger later dereferences. Reachability requires permission to modify privileged attributes and enabled AD DC database audit logging; exploitation corrupts audit output or crashes the server process.

CVSS severity5.4
Medium
EPSS probability1.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the Samba AD LDAP server before 4.16.4 allows remote authenticated users to crash the service via LDAP requests. A preceding database module reallocates a shallow-copied LDAP value array, leaving the original message with a dangling pointer that the audit logger later dereferences. Reachability requires permission to modify privileged attributes and enabled AD DC database audit logging; exploitation corrupts audit output or crashes the server process.

The record

CVE
CVE-2022-32746
Published
Aug 25, 2022
Updated
Aug 3, 2024
Vendor
PPP Project
Product
Samba
Classifications
CWE-416, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Versions prior to samba 4.16.4, samba 4.15.9, samba 4.14.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PPP Project · Sambaversion=Versions prior to samba 4.16.4, samba 4.15.9, samba 4.14.14

Published CVSS scores

5.4Samba TeamCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo