CVE-2016-1866

HIGHNVD 8.18.1—

8.1

Salt 2015.8.x before 2015.8.4 does not properly handle clear messages on the minion, which allows man-in-the-middle attackers to execute arbitrary code by inserting packets into the minion-master data stream.

CVSS v3: 8.1
EG Score: 8.1(medium)
EPSS: 70.6%
KEV: Not listed

Published

April 12, 2016

Last Modified

May 6, 2026

References (4)

cve@mitrehttp://lists.opensuse.org/opensuse-updates/2016-03/msg00034.html
cve@mitrehttps://docs.saltstack.com/en/latest/topics/releases/2015.8.4.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2016-03/msg00034.html
af854a3a-2127-422b-91ae-364da2661108https://docs.saltstack.com/en/latest/topics/releases/2015.8.4.html

Affected Packages

(1 across 1 ecosystem)

PyPI(1)

Package	Vulnerable range	Fixed in	Dependents
salt	2015.8.0, 2015.8.1, 2015.8.2, 2015.8.3	2015.8.4	—

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:43 UTCepss_batch
2026-05-23 00:10 UTCEG score recompute
2026-05-22 21:15 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-22 20:54 UTCEG score recompute
2026-05-21 22:40 UTCepss_batch
2026-05-20 22:37 UTCepss_batch

Frequently asked(5)

What is CVE-2016-1866?

CVE-2016-1866 is a high vulnerability published on April 12, 2016. Salt 2015.8.x before 2015.8.4 does not properly handle clear messages on the minion, which allows man-in-the-middle attackers to execute arbitrary code by inserting packets into the minion-master data stream.

When was CVE-2016-1866 disclosed?

CVE-2016-1866 was first published in the National Vulnerability Database on April 12, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-1866 actively exploited?

CVE-2016-1866 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 70.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-1866?

CVE-2016-1866 has a CVSS v3 base score of 8.1 (NVD).

How do I remediate CVE-2016-1866?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-1866, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2016-1866

📅 Published

🔄 Last Modified

🔗 References (4)