CVE-2016-2115

5.9 MEDIUM 10% exploit odds Fix listed Crypto OS & kernel

What it is

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 does not require SMB signing within a DCERPC session over ncacn_np, which allows man-in-the-middle attackers to spoof SMB clients by modifying the client-server data stream.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data tampering.
Exploit odds: 10.2% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2016-04-25 00:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:43 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 10.2% in the next 30 days (EPSS).
Severity: 5.9 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2016-04-25 00:59 UTC
Last modified: 2026-06-17 00:43 UTC
Exploit probability: 10.2% · EPSS, next 30 days
Weakness: CWE-254
Record status: Modified

Affected

Canonical Ubuntu Linux 14.04
Canonical Ubuntu Linux 15.10
Canonical Ubuntu Linux 16.04
Samba 3.0.0
Samba 3.0.1
Samba 3.0.2
Samba 3.0.2a
Samba 3.0.3

Attack profile CVSS 3.0 · 5.9

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Raw vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2016-2115.md and follow it. Check whether this project is affected by CVE-2016-2115. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record