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rpm CVE-2026-84233

| EUVDEUVD-2026-69249 HIGH
OS Command Injection (CWE-78)
2026-09-01 secalert@redhat.com GHSA-j9c4-6ppm-mvh4
Command Injection
7.0
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
7.0 HIGH
AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
7.0 HIGH

AV:L because the attacker must place a file locally; AC:H and UI:R because a user or workflow must invoke rpmuncompress on the crafted file; PR:N because creating a gem filename requires no special privileges.

3.1 AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Red Hat
7.0 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Sep 01, 2026 - 15:47 vuln.today
CVE Published
Sep 01, 2026 - 15:17 nvd
HIGH 7.0

DescriptionCVE.org

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.

AnalysisAI

Command injection in rpm's rpmuncompress utility allows a local attacker who can place a crafted .gem file containing RPM macro syntax to execute arbitrary commands with the privileges of the invoking user or automated workflow. The vulnerability arises because the macro expansion engine processes the gem filename during command construction without sanitization, meaning any RPM macro embedded in the filename is evaluated at execution time. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires two concrete, sequential prerequisites. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.0 base score (AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H) accurately reflects a scenario where high impact potential is substantially constrained by attack preconditions. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is to apply the vendor-released patch from Red Hat once announced; monitor https://access.redhat.com/security/cve/CVE-2026-84233 for patched package versions, as no specific fixed version was confirmed in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all systems running rpm with rpmuncompress capability and identify those processing .gem files, particularly in CI/CD environments; immediately restrict .gem file sources to explicitly trusted repositories and disable automatic gem processing where possible. …

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise High Performance Computing 12 Not-Affected
SUSE Linux Enterprise Micro 5.3 Not-Affected
SUSE Linux Enterprise Micro 5.4 Not-Affected
SUSE Linux Enterprise Micro 5.5 Not-Affected

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CVE-2026-84233 vulnerability details – vuln.today
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