CVE-2022-1227Public exploitNetwork attack vector

Host privilege escalation via container-supplied nsenter

Published Apr 29, 2022 · Updated Aug 2, 2024

Privilege escalation in Containers psgo before 1.7.2 allows remote attackers to access the host through a malicious container image. The process-inspection path resolves and executes the container-supplied nsenter binary without applying the container's security profiles. Exploitation requires a user-namespaced container built from the attacker's image and a victim invoking Podman top, after which code can read the host filesystem or interrupt host processes.

CVSS severity8.7
High
EPSS probability4.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Containers psgo before 1.7.2 allows remote attackers to access the host through a malicious container image. The process-inspection path resolves and executes the container-supplied nsenter binary without applying the container's security profiles. Exploitation requires a user-namespaced container built from the attacker's image and a victim invoking Podman top, after which code can read the host filesystem or interrupt host processes.

The record

CVE
CVE-2022-1227
Published
Apr 29, 2022
Updated
Aug 2, 2024
Vendor
Containers
Product
psgo
Classifications
CWE-281, CWE-269, T1611
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=podman 4.0, psgo 1.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Containers · psgoversion=podman 4.0, psgo 1.7.2

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.0SUSECVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-281Improper Preservation of Permissions
CWE-269Improper Privilege Management
T1611Escape to Host

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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