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CVE-2026-3012

Samba: group policy certificate enrollment uses http:// without validation

Published: May 27, 2026Updated: Jun 30, 2026 Sources: CVE List NVD BDUCWE-345
8.0HIGH
NVD MITRE
EPSS Score
0.3%
Top 82.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A flaw was found in Samba’s certificate auto-enrollment Group Policy handling. When certificate auto-enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:HPR:NUI:NS:CC:HI:HA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-345

Affected Products

Red Hat Inc.
commercial·USaka redhat, Red Hat
OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10.0 Extended Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsOn-premOS
Operating Systems / linux-distro
samba
oss-project·DE
sambaLibraryLibrary
Operating Systems / unix-bsd
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
Amazon.com Inc.
commercial·USaka amazon, amazon web services
Amazon LinuxMixed
Operating Systems / linux-distro
Canonical Ltd.
commercial·GBaka canonical
UbuntuOn-premOS
Operating Systems / linux-distro
Samba Team
oss-project·AUaka samba
SambaLibraryLibrary
OSS Libraries / generic-library
and 10 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Scannable·OpenVAS
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:22644
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:22963
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:25049
access.redhat.com
and 16 more references View all →
News mentions
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