Servers and applications
CVE-2016-2119
libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5 allows man-in-the-middle attackers to bypass a client-signing protection mechanism, and consequently spoof SMB2 and SMB3 servers, via the (1) SMB2_SESSION_FLAG_IS_GUEST or (2) SMB2_SESSION_FLAG_IS_NULL flag.
- Severity
- High 7.5
- Published
- 7 Jul 2016
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 4.2.14, 4.3.11, 4.4.5
- Exploit chance
- 3.1% in the next 30 daysHigher than 87% of CVEs. EPSS by FIRST, 11 Nov 2026
- Weakness
- Code injection (CWE-94)
- Attack
- Over the network · Only under certain conditions · No login needed · Needs someone to click or open something
- Attacker can
- Read data · Change data · Take it down
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
SambaServers and applications · cpe:a:samba:samba |
|