CVE-2020-25722Network attack vector

Domain compromise via incorrect AD attribute checks

Published Feb 18, 2022 · Updated Aug 4, 2024

Incorrect authorization in Samba AD DC before 4.13.14, 4.14.10, or 4.15.2 allows remote authenticated users to compromise the domain. Per-attribute and schema checks fail to protect sensitive msDS-AllowedToDelegateTo and sidHistory values and fail to enforce UPN and SPN uniqueness. A domain user able to create or modify user or computer objects can impersonate accounts or services and achieve total domain compromise.

CVSS severity8.8
High
EPSS probability1.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Samba AD DC before 4.13.14, 4.14.10, or 4.15.2 allows remote authenticated users to compromise the domain. Per-attribute and schema checks fail to protect sensitive msDS-AllowedToDelegateTo and sidHistory values and fail to enforce UPN and SPN uniqueness. A domain user able to create or modify user or computer objects can impersonate accounts or services and achieve total domain compromise.

The record

CVE
CVE-2020-25722
Published
Feb 18, 2022
Updated
Aug 4, 2024
Vendor
PPP Project
Product
Samba
Classifications
CWE-863, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=samba 4.15.2, samba 4.14.10, samba 4.13.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PPP Project · Sambaversion=samba 4.15.2, samba 4.14.10, samba 4.13.14

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8Samba TeamCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-863Incorrect Authorization
T1098Account Manipulation

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

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Your stack

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