CVE-2020-10695

Container privilege escalation via writable passwd file

Published May 26, 2021 · Updated Aug 4, 2024

Incorrect privilege assignment in Red Hat Single Sign-On before 7.4.4 allows local users in its OpenShift container to gain privileges. The container image gives /etc/passwd permissions that let non-root users modify the file and add an account. Exploitation requires access inside the running Linux container and can grant elevated container privileges.

CVSS severity7.8
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect privilege assignment in Red Hat Single Sign-On before 7.4.4 allows local users in its OpenShift container to gain privileges. The container image gives /etc/passwd permissions that let non-root users modify the file and add an account. Exploitation requires access inside the running Linux container and can grant elevated container privileges.

The record

CVE
CVE-2020-10695
Published
May 26, 2021
Updated
Aug 4, 2024
Vendor
Red Hat
Product
Red Hat Single Sign-On
Classifications
CWE-266, T1136.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=redhat-sso 7.4.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Red Hat · Red Hat Single Sign-Onversion=redhat-sso 7.4.4

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1136.001Create Account: Local Account

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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