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Ubuntu Linux CVE-2026-55564

| EUVDEUVD-2026-62662 MEDIUM
Out-of-bounds Read (CWE-125)
2026-07-09 vendor:ubuntu
Buffer Overflow Information Disclosure
5.4
CVSS 3.1 · Vendor: vendor:ubuntu
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Severity by source

Vendor (vendor:ubuntu) PRIMARY
5.4 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
SUSE
MEDIUM
qualitative
Red Hat
5.4 MEDIUM
qualitative

Primary rating from Vendor (vendor:ubuntu).

CVSS VectorVendor: vendor:ubuntu

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

Lifecycle Timeline

3
Patch available
Aug 19, 2026 - 19:18 EUVD
CVSS changed
Aug 19, 2026 - 18:22 NVD
5.4 (MEDIUM)
Analysis Generated
Jul 09, 2026 - 15:31 vuln.today

DescriptionCVE.org

[Unknown description]

AnalysisAI

CVE-2026-55564 has been reported by Ubuntu but carries no publicly available description, CVSS score, vector, or CWE classification at time of analysis. The affected product, vulnerability class, and impact scope are entirely unconfirmed from available intelligence. No assessment of attacker capability or victim exposure is possible without a description or vendor advisory detailing the flaw.

Technical ContextAI

No technical context is derivable from the available data. The sole intelligence signal is attribution to the Ubuntu vendor reporting channel, suggesting the vulnerability affects a package distributed via Ubuntu repositories or the Ubuntu platform itself. Without a CPE string, CWE identifier, or description, the underlying technology, library, or protocol cannot be identified. The affected component, version range, and root cause class are all unknown.

RemediationAI

No remediation can be recommended at this time. No patch version, vendor advisory URL, or fix reference is available in the provided intelligence. Organizations should monitor the Ubuntu Security Notices portal and the NVD entry for CVE-2026-55564 for patch releases and advisory publication. In the interim, applying general least-privilege principles and ensuring Ubuntu systems are current on all available security updates represents the only actionable guidance without further data.

Same weakness CWE-125 – Out-of-bounds Read

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Same technique Buffer Overflow

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CVE-2020-0796 CRITICAL POC
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CVE-2019-11043 CRITICAL POC
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CVE-2009-0927 HIGH POC
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CVE-2012-1889 HIGH POC
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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected

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CVE-2026-55564 vulnerability details – vuln.today
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