CVE-2020-10704

Name: CVE-2020-10704
Creator: NVD / NIST
Published: 2020-05-06T14:15:10.817+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.45%

Last modified Jun 17, 2026

CVE-2020-10704 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. EPSS estimates a 3.45% chance of exploitation in the next 30 days.

Description

A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.

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

3.45%

87.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Samba	Samba	>= 4.0.0, < 4.10.15
Samba	Samba	>= 4.11.0, < 4.11.8
Samba	Samba	>= 4.12.0, < 4.12.2
Fedoraproject	Fedora	30
Fedoraproject	Fedora	31
Opensuse	Leap	15.2
Debian	Debian Linux	9.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10704Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00041.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7DVGCHG3XPIBQ5ETGMGW7MXNOO4HFH4/
https://security.gentoo.org/glsa/202007-15Third Party Advisory
https://www.samba.org/samba/security/CVE-2020-10704.htmlVendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10704Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00041.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7DVGCHG3XPIBQ5ETGMGW7MXNOO4HFH4/
https://security.gentoo.org/glsa/202007-15Third Party Advisory
https://www.samba.org/samba/security/CVE-2020-10704.htmlVendor Advisory

Timeline

Published: May 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10704?

How severe is CVE-2020-10704?

CVE-2020-10704 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10704?

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-2020-10704?

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

Scan your code now

Source: NVD / NIST