CVE-2022-37966 @ Bullseye

"CVE-2022-37966"
"samba-4.13.13+dfsg-1~deb11u8"
"samba-common-4.13.13+dfsg-1~deb11u8"
"samba-common-bin-4.13.13+dfsg-1~deb11u8"
"samba-dsdb-modules-4.13.13+dfsg-1~deb11u8"
"samba-libs-4.13.13+dfsg-1~deb11u8"
"samba-vfs-modules"
"Am I vulnerable?"

Status

accepted_risk

Priority

3.21

Match score

4.0

Risk

PrivEsc MemCorrupt Remote priv:admin

CVSS

8.1 HIGH

Reason

cpe: samba; pkgs: samba, samba-common, samba-common-bin, samba-dsdb-modules, samba-libs, samba-vfs-modules; version: in-range: samba-4.13.13+dfsg-1~deb11u8, samba-4.13.13+dfsg-1~deb11u8, samba-common-4.13.13+dfsg-1~deb11u8, samba-common-bin-4.13.13+dfsg-1~deb11u8, samba-dsdb-modules-4.13.13+dfsg-1~deb11u8, samba-libs-4.13.13+dfsg-1~deb11u8; debian:bullseye samba open; risk:priv_esc; remote

Created

2026-08-11T10:15:46Z

Updated

2026-08-22T10:16:15Z

Closed

2026-08-11T15:31:52Z

Package interrogation (copy)

Run on the host — click to copy a command. Debian/apt

Package	Commands
samba-4.13.13+dfsg-1~deb11u8
samba-common-4.13.13+dfsg-1~deb11u8
samba-common-bin-4.13.13+dfsg-1~deb11u8
samba-dsdb-modules-4.13.13+dfsg-1~deb11u8
samba-libs-4.13.13+dfsg-1~deb11u8
samba-vfs-modules

Inventory lookup

Search package inventory across systems, then return here. Create a ticket on systems the matcher missed.

Suggestions: samba · samba-common · samba-common-bin · samba-dsdb-modules · samba-libs · samba-vfs-modules

System	Matches	Ticket for CVE-2022-37966
Archive	samba-common 2:4.9.5+dfsg-5+deb10u5; samba-common-bin 2:4.9.5+dfsg-5+deb10u5	accepted_risk open
Bullseye	samba-common 2:4.13.13+dfsg-1~deb11u8; samba-common-bin 2:4.13.13+dfsg-1~deb11u8	accepted_risk open
Library	samba-common 2:4.5.16+dfsg-1+deb9u4; samba-common-bin 2:4.5.16+dfsg-1+deb9u4	accepted_risk open
Saiph	samba-common 2:4.9.5+dfsg-5+deb10u5; samba-common-bin 2:4.9.5+dfsg-5+deb10u5	accepted_risk open
Matrix	samba-common 2:4.17.12+dfsg-0+deb12u4; samba-common-bin 2:4.17.12+dfsg-0+deb12u4	none

Same product CVEs in your queue

Other tickets that look like the same product (from match reason). Relate them here to triage this CVE as the primary.

CVE	CVSS	Systems	Status	Matched	Already related
CVE-2026-4408	9.0	Archive, Library, Saiph	new	samba-common-bin	—
CVE-2022-38023	8.1	Archive, Bullseye, Library, Saiph	accepted_risk	samba-common-bin	—
CVE-2026-3644	7.5	Library	accepted_risk	samba	—
CVE-2026-4224	7.5	Library	accepted_risk	samba	—
CVE-2026-7210	7.5	Library	accepted_risk	samba	→ CVE-2026-15308
CVE-2026-15308	7.5	Library	accepted_risk	samba	—
CVE-2022-37967	7.2	Archive, Bullseye, Library, Saiph	not_applicable	samba-common-bin	→ CVE-2022-37966	linked here

Related CVE (same fix)

Point this ticket’s CVE at a higher-priority / same-fix primary so you only triage one.

Other CVEs related to this one as primary:

Related CVE	Note	Tickets
CVE-2022-37967	same product as CVE-2022-37966	Library, Archive, Bullseye, Saiph

Host OS / kernel

Debian GNU/Linux 11 (bullseye) (11) · debian

Arch

x86_64

kernel_release

uname -r → 5.10.0-45-amd64

kernel_version

uname -v → #1 SMP Debian 5.10.259-1 (2026-07-02)

For Linux kernel CVEs, kernel_version (Debian packaging / build string) often decides fixed vs not; kernel_release is used for upstream NVD range compares.

Same CVE on other hosts

Open the ticket for this CVE on another system.

System	Status	Priority	Updated
Library	accepted_risk	4.43	2026-08-22T10:16:15Z	Open
Archive	accepted_risk	3.21	2026-08-22T10:16:15Z	Open
Saiph	accepted_risk	3.21	2026-08-22T10:16:15Z	Open

Description

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

Determination

ulnerability: Weak RC4-HMAC Kerberos session keys issued by Samba AD Domain Controllers
Impact: Elevation of privilege (Kerberos ticket attacks)
Affected: All Samba versions that act as an AD DC (or use Kerberos with RC4)
Fixed upstream: 4.15.13 / 4.16.8 / 4.17.4
If this Samba instance is only used as a simple file server (no AD DC role), the practical risk is significantly lower, but the code is still vulnerable.
No public access

Update status

Add note only

Mitigation log

2026-08-11T15:25:27Z — affects

ulnerability: Weak RC4-HMAC Kerberos session keys issued by Samba AD Domain Controllers Impact: Elevation of privilege (Kerberos ticket attacks) Affected: All Samba versions that act as an AD DC (or use Kerberos with RC4) Fixed upstream: 4.15.13 / 4.16.8 / 4.17.4

2026-08-11T15:26:27Z — affects

If this Samba instance is only used as a simple file server (no AD DC role), the practical risk is significantly lower, but the code is still vulnerable.

2026-08-11T15:31:41Z — affects

No public access

References

NVD: CVE-2022-37966