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CVE-2026-84233

Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filenames

Published: Sep 1, 2026Updated: Sep 4, 2026 Sources: CVE List NVDCWE-78
7.0HIGH
NVD MITRE
EPSS Score
0.1%
Top 97.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

Description

A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename containing RPM macro syntax. When a user or automated workflow invokes `rpmuncompress -x` on this file, the macro expansion occurs during command construction. This allows the attacker to execute arbitrary commands with the privileges of the invoking account, leading to a compromise of confidentiality, integrity, and availability.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-78

Affected Products

Red Hat
commercial·US
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat Hardened ImagesOn-premOS
Operating Systems / linux-distro
and 4 more affected products View all →

Exploitability

Workaround Available
Is your org exposed to CVE-2026-84233?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Execution
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References

https://access.redhat.com/security/cve/CVE-2026-84233
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2478409
bugzilla.redhat.com
News mentions
1

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