CVE-2026-54228

Local file writes via SetElement TOCTOU race

Published Jun 13, 2026 · Updated Jun 13, 2026

TOCTOU race in ABRT on Red Hat Enterprise Linux 7 and 8 allows local users to write arbitrary text files in root-owned dump directories. The dd_accessible_by_uid check trusts the crash record's uid element, so SetElement accepts writes during the several-second gap before event scripts run. Local access and a running ABRT service are required; planted component metadata bypasses package validation and preserves crashes from unpackaged binaries.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

TOCTOU race in ABRT on Red Hat Enterprise Linux 7 and 8 allows local users to write arbitrary text files in root-owned dump directories. The dd_accessible_by_uid check trusts the crash record's uid element, so SetElement accepts writes during the several-second gap before event scripts run. Local access and a running ABRT service are required; planted component metadata bypasses package validation and preserves crashes from unpackaged binaries.

The record

CVE
CVE-2026-54228
Published
Jun 13, 2026
Updated
Jun 13, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 7
Classifications
CWE-367
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 13, 2026Record 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 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

7.8Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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.

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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-367Time-of-check Time-of-use (TOCTOU) Race Condition

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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