CVE-2021-27021

A flaw was discovered in Puppet DB, this flaw results in an escalation of privileges which allows the user to delete tables via an SQL query.

Published: 2021-07-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-27021 is rated Moderate Risk (58.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.26%). 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-2021-27021

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 0.63% 1.26% +0.64%
2 2025-11-21 0.71% 0.63% -0.08%
3 2025-11-18 — 0.71% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-27021

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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: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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/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:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2021-27021

OS Trackers for CVE-2021-27021

vendor priority summary link
debian not yet assigned CVE-2021-27021 not yet assigned priority: Debian including 1 source packages (puppetdb), 3 status rows across 3 suites (bookworm, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2021-27021
redhat high — https://access.redhat.com/security/cve/CVE-2021-27021
ubuntu medium CVE-2021-27021 medium priority: Ubuntu including 1 source packages (puppetdb), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 5, not-affected 5, ignored 4, needed 1, released 1. https://ubuntu.com/security/CVE-2021-27021

Affected software / configurations for CVE-2021-27021

Vendor Product Version Raw CPE
puppet puppet < 6.23.0 cpe:2.3:a:puppet:puppet:*:*:*:*:*:*:*:*
puppet puppet >= 7.7.0, < 7.8.0 cpe:2.3:a:puppet:puppet:*:*:*:*:*:*:*:*
puppet puppet_enterprise < 2019.8.7 cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*
puppet puppet_enterprise >= 2021.0.0, < 2021.2.0 cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*
puppet puppetdb < 6.17.0 cpe:2.3:a:puppet:puppetdb:*:*:*:*:*:*:*:*
puppet puppetdb >= 7.0.0, < 7.4.1 cpe:2.3:a:puppet:puppetdb:*:*:*:*:*:*:*:*

References for CVE-2021-27021

cvelogic Threat Intelligence