HOMEVULNERABILITIESCVE-2021-20290
MEDIUM

CVE-2021-20290

CWE-863Published: March 25, 2022· Updated: Jun 17, 2026

6.1
CVSS v3.1

Official Description

An improper authorization handling flaw was found in Foreman. The OpenSCAP plugin for the smart-proxy allows foreman clients to execute actions that should be limited to the Foreman Server. This flaw allows an authenticated local attacker to access and delete limited resources and also causes a denial of service on the Foreman server. The highest threat from this vulnerability is to integrity and system availability.

NVD Source

Technical Analysis

CVE-2021-20290 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Affected Vendors & Products

theforeman1 product(s)
openscap
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1939701
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1939701

All References (2)

→
https://bugzilla.redhat.com/show_bug.cgi?id=1939701Exploit · Issue Tracking · Mitigation · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1939701Exploit · Issue Tracking · Mitigation · Third Party Advisory

Quick Facts

CVE IDCVE-2021-20290
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-863
CISA KEVNo
Affected1 vendor(s)
PublishedMar 25, 2022

Related CVEs (CWE-863)

CVE-2026-48321
10.0
CVE-2026-48303
10.0
CVE-2020-13300
10.0
CVE-2021-38503
10.0
CVE-2026-48286
10.0
CVE-2018-18815
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-20290 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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