No exploitation reportedFix available

CVE-2015-5370

No exploitation reported by the sources we read.

Published2016-04-25

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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 properly implement the DCE-RPC layer, which allows remote attackers to perform protocol-downgrade attacks, cause a denial of service (application crash or CPU consumption), or possibly execute arbitrary code on a client system via unspecified vectors.

Timeline

dates in UTC

2016-04-2500:59CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-5370?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-5370?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Samba

Branch	Affected	Fixed in	Source
3.6	= 3.6.0	no fix published	NVD
3.6	= 3.6.1	no fix published	NVD
3.6	= 3.6.2	no fix published	NVD
3.6	= 3.6.3	no fix published	NVD
3.6	= 3.6.4	no fix published	NVD
3.6	= 3.6.5	no fix published	NVD
3.6	= 3.6.6	no fix published	NVD
3.6	= 3.6.7	no fix published	NVD
3.6	= 3.6.8	no fix published	NVD
3.6	= 3.6.9	no fix published	NVD
3.6	= 3.6.10	no fix published	NVD
3.6	= 3.6.11	no fix published	NVD

Canonical ubuntu linux

Branch	Affected	Fixed in	Source
14.4	= 14.04	no fix published	NVD
15.10	= 15.10	no fix published	NVD
16.4	= 16.04	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

www.samba.orgPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.05.9read 2026-10-23
NVDCVSS 2.04.3read 2026-10-23
FIRST EPSSEPSS score19.1 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Published: 2016-04-25
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2015-5370?

Is CVE-2015-5370 actively exploited?

Active exploitation of CVE-2015-5370 has not been confirmed. Its EPSS score was 19.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2015-5370?

CVE-2015-5370 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

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