How severe is CVE-2016-9639?

CVE-2016-9639 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2016-9639 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9639?

CVE-2016-9639 affects Saltstack Salt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-9639?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-9639 published?

CVE-2016-9639 was published on 2017-02-07 and last updated on 2026-06-17.

CVE-2016-9639

CVE-2016-9639 is a critical-severity vulnerability in Saltstack Salt with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 7.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Saltstack Salt
Published: 2017-02-07
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2016-9639?: Salt before 2015.8.11 allows deleted minions to read or write to minions with the same id, related to caching.
How severe is CVE-2016-9639?: CVE-2016-9639 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2016-9639 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9639?: CVE-2016-9639 affects Saltstack Salt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-9639?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-9639 published?: CVE-2016-9639 was published on 2017-02-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:saltstack:salt:*:*:*:*:*:*:*:*

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