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CVE Vulnerabilities

CVE-2026-3012

Insufficient Verification of Data Authenticity

Published: May 27, 2026 | Modified: Jul 03, 2026
CVSS 3.x
6.8
MEDIUM
Source:
NVD
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
8 IMPORTANT
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-3012
CWEhttps://cwe.mitre.org/data/definitions/345.html

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.

Weakness

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

Affected Software

NameVendorStart VersionEnd Version
Openshift_container_platformRedhat4.0 (including)4.0 (including)
SambaSamba4.16.0 (including)4.21.0 (excluding)
Enterprise_linuxRedhat7.0 (including)7.0 (including)
Enterprise_linuxRedhat9.0 (including)9.0 (including)
Red Hat Enterprise Linux 10RedHatsamba-0:4.23.5-109.el10_2*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHatsamba-0:4.21.3-114.el10_0.1*
Red Hat Enterprise Linux 8RedHatsamba-0:4.19.4-16.el8_10*
Red Hat Enterprise Linux 8RedHatsamba-0:4.19.4-16.el8_10*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatsamba-0:4.15.5-16.el8_6.1*
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRedHatsamba-0:4.15.5-16.el8_6.1*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatsamba-0:4.17.5-7.el8_8.1*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatsamba-0:4.17.5-7.el8_8.1*
Red Hat Enterprise Linux 9RedHatsamba-0:4.23.5-10.el9_8*
Red Hat Enterprise Linux 9RedHatsamba-0:4.23.5-10.el9_8*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatsamba-0:4.17.5-105.el9_2.5*
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRedHatsamba-0:4.19.4-105.el9_4.4*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHatsamba-0:4.21.3-14.el9_6.1*
Red Hat OpenShift Container Platform 4.19RedHatrhcos-4.19.9.6.202606241344-0*
SambaUbuntunoble*
SambaUbuntuquesting*
SambaUbunturesolute*
SambaUbuntuupstream*

References

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