CVE-2016-2118

high

Published 2016-04-12 · Modified 2026-05-06

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CVSS v3

7.5

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.5

Description

The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "BADLOCK."

Predictions

Exploit likelihood

83%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Ubuntu Affected 4 releases

Version	Status	Fixed in
16.04	Affected	—
15.10	Affected	—
14.04	Affected	—
12.04	Affected	—

Debian Mixed 7 releases

Version	Status	Fixed in
trixie	Fixed	`2:4.3.7+dfsg-1`
sid	Fixed	`2:4.3.7+dfsg-1`
forky	Fixed	`2:4.3.7+dfsg-1`
bullseye	Fixed	`2:4.3.7+dfsg-1`
bookworm	Fixed	`2:4.3.7+dfsg-1`
8.0	Affected	—
7.0	Affected	—

Application impact

Vendor	Product	Versions	Fixed
samba	samba	`{"startIncluding":"3.6.0","endExcluding":"4.2.10"}`	`4.2.10`

References

CWEs

CWE-254

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.