CVE-2016-9639

Salt before 2015.8.11 allows deleted minions to read or write to minions with the same id, related to caching.

Published: 2017-02-07 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-9639 is rated Moderate Risk (62.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.80%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-9639

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-03 0.33% 0.80% +0.48%
2 2025-03-30 1.11% 0.33% -0.78%
3 2025-03-29 — 1.11% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-9639

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2016-9639

GitHub Security Advisory for CVE-2016-9639

GHSA-hvmj-356c-gpf4 · Severity: critical · Ecosystem: pip — Salt allows deleted minions to read or write to minions with the same id

OS Trackers for CVE-2016-9639

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2016-9639
suse low CVE-2016-9639 severity low: SUSE including 391 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 671 product×package rows across 60 product lines (Container caasp/v4/salt-api, Container caasp/v4/salt-master, … (60 product lines)): Known Not Affected 238, Known Affected 231, Fixed 202. https://www.suse.com/security/cve/CVE-2016-9639/
ubuntu medium CVE-2016-9639 medium priority: Ubuntu including 1 source packages (salt), 23 status rows across 23 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, xenial, yakkety, zesty): not-affected 12, DNE 8, needed 2, released 1. https://ubuntu.com/security/CVE-2016-9639

Affected software / configurations for CVE-2016-9639

Vendor Product Version Raw CPE
saltstack salt <= 2015.8.10 cpe:2.3:a:saltstack:salt:*:*:*:*:*:*:*:*

References for CVE-2016-9639

cvelogic Threat Intelligence