CVE-2025-4953

Local file exposure via retained bind-mount writes

Published Sep 16, 2025 · Updated Sep 16, 2025

Temporary-file exposure in Podman builds on Red Hat Enterprise Linux 8 and OpenShift 4 allows local users to read build-context files. During RUN --mount=type=bind, Podman preserves container-written data in a temporary host build-context directory instead of discarding it. Exposure requires concurrent unprivileged host access, a long-running build step, and permissive file modes; running containers are not compromised.

CVSS severity7.4
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Temporary-file exposure in Podman builds on Red Hat Enterprise Linux 8 and OpenShift 4 allows local users to read build-context files. During RUN --mount=type=bind, Podman preserves container-written data in a temporary host build-context directory instead of discarding it. Exposure requires concurrent unprivileged host access, a long-running build step, and permissive file modes; running containers are not compromised.

The record

CVE
CVE-2025-4953
Published
Sep 16, 2025
Updated
Sep 16, 2025
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 10
Classifications
CWE-378, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift Container Platform 4Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

7.4Red HatCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

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-378Creation of Temporary File With Insecure Permissions
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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