CVE-2016-8647

An input validation vulnerability was found in Ansible's mysql_user module before 2.2.1.0, which may fail to correctly change a password in certain circumstances. Thus the previous password would still be active when it should have been changed.

Published: 2018-07-26 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-8647 is rated Moderate Risk (45.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.43%). EPSS rose +1.20% over the last day, indicating growing attacker interest. 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-2016-8647

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 2026-06-15 0.22% 1.43% +1.20%
2 2025-07-13 0.34% 0.22% -0.12%
3 2025-06-19 — 0.34% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-8647

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/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:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:N)
Doesn’t really leak secrets in a meaningful 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.
 1.2 3.6 [email protected]
2.2 3.0 LOW
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 0.7 1.4 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:N 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:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2016-8647

GitHub Security Advisory for CVE-2016-8647

GHSA-x4cm-m36h-c6qj · Severity: medium · Ecosystem: pip — Improper Input Validation in ansible

OS Trackers for CVE-2016-8647

vendor priority summary link
debian not yet assigned CVE-2016-8647 not yet assigned priority: Debian including 1 source packages (ansible), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-8647
redhat low — https://access.redhat.com/security/cve/CVE-2016-8647
suse low CVE-2016-8647 severity low: SUSE including 11 source package names (ansible, ansible-2.9.14-3.15.1, …), 22 product×package rows across 10 product lines (HPE Helion OpenStack 8, SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP7, … (10 product lines)): Fixed 18, Known Not Affected 4. https://www.suse.com/security/cve/CVE-2016-8647/
ubuntu low CVE-2016-8647 low priority: Ubuntu including 1 source packages (ansible), 21 status rows across 21 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 16, ignored 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2016-8647

Affected software / configurations for CVE-2016-8647

Vendor Product Version Raw CPE
redhat ansible_engine < 2.2.1.0 cpe:2.3:a:redhat:ansible_engine:*:*:*:*:*:*:*:*
redhat virtualization 4.1 cpe:2.3:a:redhat:virtualization:4.1:*:*:*:*:*:*:*

References for CVE-2016-8647

cvelogic Threat Intelligence