CVE-2021-20256

A flaw was found in Red Hat Satellite. The BMC interface exposes the password through the API to...

5.3 Medium

A flaw was found in Red Hat Satellite. The BMC interface exposes the password through the API to an authenticated local attacker with view_hosts permission. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.26%Unchanged since Apr 14, 2021

What each source reports

NVD Score used 5.3

Record: CVE-2021-20256
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS 2.0: 4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-200
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-20256
Weakness: CWE-200
Updated: 2026-11-02

EUVDEUVD-2021-7694 No score

Record: EUVD-2021-7694
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7h9m-xcfj-p257 5.3

A flaw was found in Red Hat Satellite. The BMC interface exposes the password through the API to...

Record: GHSA-7h9m-xcfj-p257
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness: CWE-200
Updated: 2026-11-02

OSVRHSA-2021:4702 9.8

Red Hat Security Advisory: Satellite 6.10 Release

Record: RHSA-2021:4702
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`python-ecdsa` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:0.13.3-2.el7pc	0:0.13.3-2.el7pc
`python3-ecdsa` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:0.13.3-2.el7pc	0:0.13.3-2.el7pc
`python-ecdsa` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:0.13.3-2.el7pc	0:0.13.3-2.el7pc
`python3-ecdsa` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:0.13.3-2.el7pc	0:0.13.3-2.el7pc
`tfm-rubygem-activerecord-session_store` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:2.0.0-1.el7sat	0:2.0.0-1.el7sat
`satellite` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:6.10.0-3.el7sat	0:6.10.0-3.el7sat
`satellite` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:6.10.0-3.el7sat	0:6.10.0-3.el7sat
`candlepin` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:4.0.9-1.el7sat	0:4.0.9-1.el7sat
`python-pyyaml` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:5.4.1-1.el7pc	0:5.4.1-1.el7pc
`python3-pyyaml` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:5.4.1-1.el7pc	0:5.4.1-1.el7pc

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Affected packages
Package	Affected	Fixed
`python-pyyaml` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:5.4.1-1.el7pc	0:5.4.1-1.el7pc
`python3-pyyaml` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:5.4.1-1.el7pc	0:5.4.1-1.el7pc
`tfm-rubygem-nokogiri` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:1.11.3-2.el7sat	0:1.11.3-2.el7sat
`tfm-rubygem-nokogiri` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:1.11.3-2.el7sat	0:1.11.3-2.el7sat
`satellite-capsule` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:6.10.0-3.el7sat	0:6.10.0-3.el7sat
`foreman` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:2.5.2.17-2.el7sat	0:2.5.2.17-2.el7sat
`foreman` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:2.5.2.17-2.el7sat	0:2.5.2.17-2.el7sat
`python-aiohttp` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:3.7.4-1.el7pc	0:3.7.4-1.el7pc
`python-aiohttp` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:3.7.4-1.el7pc	0:3.7.4-1.el7pc
`tfm-rubygem-actionpack` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:6.0.3.7-1.el7sat	0:6.0.3.7-1.el7sat
`tfm-rubygem-rails` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:6.0.3.7-1.el7sat	0:6.0.3.7-1.el7sat
`python3-django` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:2.2.24-1.el7pc	0:2.2.24-1.el7pc
`python3-django` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:2.2.24-1.el7pc	0:2.2.24-1.el7pc
`tfm-rubygem-puma` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:5.3.2-1.el7sat	0:5.3.2-1.el7sat
`tfm-rubygem-addressable` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:2.8.0-1.el7sat	0:2.8.0-1.el7sat
`python-urllib3` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:1.26.5-1.el7pc	0:1.26.5-1.el7pc
`python3-urllib3` Red Hat:satellite_capsule:6.10::el7 From an advisory covering 21 CVEs	before 0:1.26.5-1.el7pc	0:1.26.5-1.el7pc
`python-urllib3` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:1.26.5-1.el7pc	0:1.26.5-1.el7pc
`python3-urllib3` Red Hat:satellite:6.10::el7 From an advisory covering 21 CVEs	before 0:1.26.5-1.el7pc	0:1.26.5-1.el7pc

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-20256 is a medium vulnerability (CVSS 5.3) in Red Hat Satellite, published February 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. No source names a fixed version.

References

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