OPENSUSE-SU-2026:21540-1: samba security update

OPENSUSE-SU-2026:21540-1, released August 6, 2026, fixes 13 CVEs in samba (version 4.22.11+git.552.66cfeb7de0a-160000.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

2 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.4693

98th percentile

Priority of the 13 CVEs

Patch now 0
                                Urgent 2
                                High 5
                                Routine 6

Fixed package versions

Product	Release	Fixed in
samba	opensuse-leap 16.0	4.22.11+git.552.66cfeb7de0a-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-2340	samba: WORM vfs module does not block directory modification and allows file changes by any user with	9.0	0.0095	None reported
Urgent	CVE-2026-1933	samba: missing access check on reparse point operations allows unauthorized users to modify the	9.0	0.0086	None reported
High	CVE-2026-4408	samba: improper escaping allows for remote command execution via the DCE/RPC SAMR server (bsc#1261163).	9.8	0.4693	None reported
High	CVE-2026-4480	samba: improper escaping allows for unauthenticated remote code execution via the printing subsystem	9.0	0.2869	None reported
High	CVE-2026-3238	samba: NULL pointer dereference in the WINS server compoenent of the AD domain controller code can lead	7.5	0.0267	None reported
High	CVE-2026-58222	samba: A security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory...	8.8	0.0080	None reported
High	CVE-2026-3012	samba: auto-enrolment GPO installing CA certificate over http without verification (bsc#1261159).	9.0	0.0026	None reported
Routine	CVE-2026-58218	samba: A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TK...	5.3	0.0078	None reported
Routine	CVE-2026-58216	samba: An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) se...	5.3	0.0046	None reported
Routine	CVE-2026-58224	ctdb: A flaw was found in Samba's CTDB, the clustered database service used by Samba	6.5	0.0034	None reported
Routine	CVE-2026-15779	ctdb: A flaw was found in samba's pam_winbind	n/a	0.0011	None reported
Routine	CVE-2026-58221	samba vulnerability	n/a	n/a	None reported
Routine	CVE-2026-6949	samba vulnerability	n/a	n/a	None reported

Also fixes CVE-2026-2340

SUSE-SU-2026:23152-1
samba on sles 16.0
ELSA-2026-22963
ldb-tools, libldb, libldb-devel and 34 more on ol 10
RHSA-2026:25049
ctdb, ldb-tools, libldb and 35 more on RHEL 9
ELSA-2026-25049
ldb-tools, libldb, libldb-devel and 34 more on ol 9
RLSA-2026:25049
samba on rocky 9
RLSA-2026:22963
samba on rocky 10
ALSA-2026:25049
ldb-tools, libldb, libldb-devel and 34 more on almalinux 9
ALSA-2026:22963
ldb-tools, libldb, libldb-devel and 34 more on almalinux 10

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21540-1

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