CVE-2020-25718Network attack vector

Administrator ticket forgery via missing RODC authorization

Published Feb 18, 2022 · Updated Aug 4, 2024

Missing authorization in the Samba AD DC allows remote authenticated users controlling an RODC to forge administrator Kerberos tickets. When accepting an RODC-issued ticket, the AD DC fails to verify permission against the msDS-NeverRevealGroup and msDS-RevealOnDemandGroup policies. Exploitation requires control of a joined RODC and grants administrator identity within the domain.

CVSS severity7.5
High
EPSS probability1.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in the Samba AD DC allows remote authenticated users controlling an RODC to forge administrator Kerberos tickets. When accepting an RODC-issued ticket, the AD DC fails to verify permission against the msDS-NeverRevealGroup and msDS-RevealOnDemandGroup policies. Exploitation requires control of a joined RODC and grants administrator identity within the domain.

The record

CVE
CVE-2020-25718
Published
Feb 18, 2022
Updated
Aug 4, 2024
Vendor
PPP Project
Product
Samba
Classifications
CWE-862, T1558
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

7.5Samba TeamCVSS:3.1/AV:N/AC:H/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-862Missing Authorization
T1558Steal or Forge Kerberos Tickets

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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