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CVE-2016-9639

23
FAUCET Score

CVE-2016-9639 describes a critical vulnerability in SaltStack Salt versions prior to 2015.8.11, where deleted minions could still access or modify data on new minions assigned the same ID due to improper caching. With a CVSS score of 9.1 (CRITICAL), this vulnerability allows unauthenticated attackers to achieve high confidentiality and integrity impact over the network with low attack complexity. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2015.8.10CPE matchmatch criteria
cpe:2.3:a:saltstack:salt:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.58%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0258 is in the 74th percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

pippatch availablevia ghsa
Product: saltFixed in: 2015.8.11
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 1.3Fixed in: salt
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 2Fixed in: salt
redhatend of lifevia redhat_api
Product: Red Hat Storage Console 2Fixed in: salt

Vendor Advisories (2)

pipGHSA-hvmj-356c-gpf4critical

Salt allows deleted minions to read or write to minions with the same id

May 17, 2022
redhatCVE-2016-9639Moderate

salt: Vulnerable caching provides access to private pillar data

Nov 25, 2016

References

docs.saltstack.com / en/2015.8/ref/configuration/master.html
Vendor Advisory
openwall.com / lists/oss-security/2016/11/25/2
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/11/25/3
Mailing ListThird Party Advisory
securityfocus.com / bid/94553
Third Party AdvisoryVDB Entry