CVE-2020-10729

Exp

A flaw was found in the use of insufficiently random values in Ansible. Two random password lookups of the same length generate the equal value as the template caching action for the same file since no re-evaluation happens. The highest threat from this vulnerability would be that all passwords are exposed at once for the file. This flaw affects Ansible Engine versions before 2.9.6.

Published: 2021-05-27 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-10729 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.43%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2020-10729

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-10729

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 0.13% 0.43% +0.30%
2 2026-04-15 0.21% 0.13% -0.08%
3 2026-04-14 — 0.21% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-10729

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:L)
A normal user session is enough; they don’t have to be admin.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
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:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2020-10729

GitHub Security Advisory for CVE-2020-10729

GHSA-r6h7-5pq2-j77h · Severity: medium · Ecosystem: pip — Insufficiently random values in Ansible

OS Trackers for CVE-2020-10729

vendor priority summary link
debian not yet assigned CVE-2020-10729 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-2020-10729
redhat medium — https://access.redhat.com/security/cve/CVE-2020-10729
suse medium CVE-2020-10729 severity moderate: SUSE including 116 source package names (ansible-10-10.6.0-1.1, ansible-11-11.11.0-1.1, …), 248 product×package rows across 10 product lines (HPE Helion OpenStack 8, HPE Helion OpenStack Cloud 8, … (10 product lines)): Fixed 246, Known Not Affected 2. https://www.suse.com/security/cve/CVE-2020-10729/
ubuntu medium CVE-2020-10729 medium priority: Ubuntu including 1 source packages (ansible), 15 status rows across 15 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): not-affected 11, released 3, ignored 1. https://ubuntu.com/security/CVE-2020-10729

Affected software / configurations for CVE-2020-10729

Vendor Product Version Raw CPE
redhat ansible_engine < 2.9.6 cpe:2.3:a:redhat:ansible_engine:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2020-10729

URL Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1831089 Issue Tracking Vendor Advisory
https://github.com/ansible/ansible/issues/34144 Exploit Issue Tracking Third Party Advisory
https://www.debian.org/security/2021/dsa-4950 Third Party Advisory
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